Vapor Deposition Patents (Class 505/473)
  • Patent number: 9349935
    Abstract: Described is a superconductive layered structure and an article including this superconductive layered structure on a substrate structure. The superconductive layered structure comprises a stack including at least one bi-layered assembly formed by first and second layers of similar superconducting material compositions, the second layer being superconductive at predetermined temperature condition, the first layer being a substantially thin layer and having a c lattice parameter selected in accordance with those of the substrate structure and the second layer, such that said first layer is non-superconductive at said predetermined temperature condition thereby allowing the second superconductive layer to be desirably thick to provide high critical current density of the superconductive layer.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: May 24, 2016
    Assignee: TECHNOLOGY INNOVATION MOMENTUM FUND (ISRAEL) LIMITED PARTNERSHIP
    Inventors: Guy Deutscher, Mishael Azoulay, Boaz Almog
  • Patent number: 9006582
    Abstract: A ceramic substrate includes a substrate body formed of ceramic and having a pair of surfaces each assuming a rectangular shape as viewed in plane, and a metallization layer formed on the surface of the substrate body and adapted to braze a metal frame thereon. A composite material layer is disposed between the surface of the substrate body and the metallization layer and is formed such that a ceramic portion, a metal portion 10m formed of a metal similar to a metal component of the metallization layer or a metal which, together with a metal component of the metallization layer, forms an all proportional solid solution, and a glass portion exist together. The thickness of the composite material layer is thinner than that of the metallization layer. A plating layer is deposited on the surface of the metallization layer.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: April 14, 2015
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takatoshi Tojo, Shinji Suzumura, Yoshitaka Yoshida, Masahiro Ogawa
  • Publication number: 20150051080
    Abstract: The films of this invention are high temperature superconducting (HTS) thin films specifically optimized for microwave and RF applications. In particular, this invention focuses on compositions with a significant deviation from the 1:2:3 stoichiometry in order to create the films optimized for microwave/RF applications. The RF/microwave HTS applications require the HTS thin films to have superior microwave properties, specifically low surface resistance, Rs, and highly linear surface reactance, Xs, i.e. high JIMD. As such, the invention is characterized in terms of its physical composition, surface morphology, superconducting properties, and performance characteristics of microwave circuits made from these films.
    Type: Application
    Filed: April 17, 2014
    Publication date: February 19, 2015
    Inventors: BRIAN MOECKLY, VIKTOR GLIANTSEV, SHING-JEN PENG, BALAM WILLEMSEN
  • Patent number: 8903464
    Abstract: An apparatus and process for the production of a niobium cavity exhibiting high quality factors at high gradients is provided. The apparatus comprises a first chamber positioned within a second chamber, an RF generator and vacuum pumping systems. The process comprises placing the niobium cavity in a first chamber of the apparatus; thermally treating the cavity by high temperature in the first chamber while maintaining high vacuum in the first and second chambers; and applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field. Further a niobium cavity exhibiting high quality factors at high gradients produced by the method of the invention is provided.
    Type: Grant
    Filed: October 23, 2010
    Date of Patent: December 2, 2014
    Assignee: Jefferson Science Associates, LLC
    Inventors: Ganapati Rao Myneni, John P. Wallace
  • Patent number: 8812068
    Abstract: A method of forming a delta niobium nitride ?-NbN layer on the surface of a niobium object including cleaning the surface of the niobium object; providing a treatment chamber; placing the niobium object in the treatment chamber; evacuating the chamber; passing pure nitrogen into the treatment chamber; focusing a laser spot on the niobium object; delivering laser fluences at the laser spot until the surface of the niobium object reaches above its boiling temperature; and rastering the laser spot over the surface of the niobium object.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 19, 2014
    Assignee: Jefferson Science Associates, LLC.
    Inventors: Michael J. Kelley, John Michael Klopf, Senthilaraja Singaravelu
  • Patent number: 8772201
    Abstract: An oxide superconducting conductor of the invention is configured to include an oxide superconducting layer including a substrate and an oxide superconductor formed on the substrate. The oxide superconductor being expressed by a composition formula of RE1Ba2Cu3Oy where RE represents a rare earth element and an expression of 6.5<y<7.1 is satisfied. A normal conduction phase including Ba and a different phase including an alkaline earth metal having an ionic radius smaller than that of Ba are dispersed in the oxide superconducting layer. The normal conduction phase is an oxide including Ba and one selected from a group consisting of Zr, Sn, Hf, Ce, and Ti.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 8, 2014
    Assignee: Fujikura Ltd.
    Inventor: Mitsunori Igarashi
  • Patent number: 8761848
    Abstract: Systems, articles, and methods are provided related to nanowire-based detectors, which can be used for light detection in, for example, single-photon detectors. In one aspect, a variety of detectors are provided, for example one including an electrically superconductive nanowire or nanowires constructed and arranged to interact with photons to produce a detectable signal. In another aspect, fabrication methods are provided, including techniques to precisely reproduce patterns in subsequently formed layers of material using a relatively small number of fabrication steps. By precisely reproducing patterns in multiple material layers, one can form electrically insulating materials and electrically conductive materials in shapes such that incoming photons are redirected toward a nearby electrically superconductive materials (e.g., electrically superconductive nanowire(s)). For example, one or more resonance structures (e.g.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 24, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Karl K. Berggren, Xiaolong Hu, Daniele Masciarelli
  • Publication number: 20140080714
    Abstract: An oxide superconducting thin film includes a substrate having a single crystal structure, the main face of the substrate and a crystal face of the single crystal structure having an angle therebetween; an intermediate layer formed on the main face of the substrate and having an axis oriented in a direction perpendicular to the crystal face; and a superconducting layer formed on the intermediate layer and containing, as a main component, an oxide superconductor having a c-axis oriented in a direction perpendicular to the surface of the intermediate layer. A superconducting fault current limiter and a method of manufacturing an oxide superconducting thin film are also provided.
    Type: Application
    Filed: May 30, 2012
    Publication date: March 20, 2014
    Applicants: National Institute of Advance Industrial Science and Technology, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kengo Nakao, Hajime Kasahara, Masakazu Matsui, Norio Matsui, Naoto Edo, Toshiya Kumagai, Takaaki Manabe, Mitsugu Sohma
  • Publication number: 20140038829
    Abstract: A superconducting thin film material exhibiting excellent superconducting properties and a method of manufacturing the same are provided. A superconducting thin film material includes a substrate, and a superconducting film formed on the substrate. The superconducting film includes an MOD layer formed by an MOD process, and a gas-phase-formed layer formed on the MOD layer by a gas-phase process. Since the MOD layer is formed first and then the gas-phase-formed layer is formed in this manner, degradation of the properties of the gas-phase-formed layer due to heat treatment in the step of forming the MOD layer (heat treatment in the MOD process) can be prevented.
    Type: Application
    Filed: May 9, 2012
    Publication date: February 6, 2014
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kei Hanafusa, Genki Honda, Kotaro Ohki, Tsuyoshi Nakanishi, Takahiro Taneda, Tatsuoki Nagaishi
  • Publication number: 20130231250
    Abstract: An oxide superconducting conductor of the invention is configured to include a substrate; and an oxide superconducting layer formed on the substrate. The oxide superconducting layer is an oxide superconductor being expressed by a composition formula of RE1Ba2Cu3Oy where RE represents a rare earth element and an expression of 6.5<y<7.1 is satisfied. The oxide superconducting layer has a different phase including Tb. The different phase is dispersed in the oxide superconducting layer.
    Type: Application
    Filed: October 18, 2012
    Publication date: September 5, 2013
    Applicant: FUJIKURA LTD.
    Inventor: Mitsunori IGARASHI
  • Patent number: 8486864
    Abstract: The present invention relates to a method for producing a phase-separated layer useful as a flux pinning substrate for a superconducting film, wherein the method includes subjecting at least a first and a second target material to a sputtering deposition technique in order that a phase-separated layer is deposited epitaxially on a primary substrate containing an ordered surface layer. The invention is also directed to a method for producing a superconducting tape containing pinning defects therein by depositing a superconducting film on a phase-separated layer produced by the method described above.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: July 16, 2013
    Assignees: UT-Battelle, LLC, University of Tennessee Research Foundation
    Inventors: Tolga Aytug, Mariappan Parans Paranthaman, Ozgur Polat
  • Patent number: 8463342
    Abstract: Superconducting rf is limited by a wide range of failure mechanisms inherent in the typical manufacture methods. This invention provides a method for fabricating superconducting rf structures comprising coating the structures with single atomic-layer thick films of alternating chemical composition. Also provided is a cavity defining the invented laminate structure.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: June 11, 2013
    Assignee: Uchicago Argonne, LLC
    Inventors: James H. Norem, Michael J. Pellin
  • Publication number: 20130053251
    Abstract: An oxide superconducting conductor of the invention is configured to include an oxide superconducting layer including a substrate and an oxide superconductor formed on the substrate. The oxide superconductor being expressed by a composition formula of RE1Ba2Cu3Oy where RE represents a rare earth element and an expression of 6.5<y<7.1 is satisfied. A normal conduction phase including Ba and a different phase including an alkaline earth metal having an ionic radius smaller than that of Ba are dispersed in the oxide superconducting layer. The normal conduction phase is an oxide including Ba and one selected from a group consisting of Zr, Sn, Hf, Ce, and Ti.
    Type: Application
    Filed: October 5, 2012
    Publication date: February 28, 2013
    Applicant: FUJIKURA LTD.
    Inventor: Mitsunori IGARASHI
  • Publication number: 20130040822
    Abstract: A method of forming a superconductive device of a single layer of (BETS)2GaCl4 molecules on a substrate surface which displays a superconducting gap that increases exponentially with the length of the molecular chain is provided.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 14, 2013
    Applicant: Ohio University
    Inventors: Saw Wai Hla, Abdelrahim Hassanien, Kendal Clark
  • Publication number: 20120264612
    Abstract: A superconducting article includes a substrate having a biaxially textured surface. A biaxially textured buffer layer, which can be a cap layer, is supported by the substrate. The buffer layer includes a double perovskite of the formula A2B?B?O6, where A is rare earth or alkaline earth metal and B? and B? are different transition metal cations. A biaxially textured superconductor layer is deposited so as to be supported by the buffer layer. A method of making a superconducting article is also disclosed.
    Type: Application
    Filed: April 15, 2011
    Publication date: October 18, 2012
    Inventors: Amit Goyal, Sung-Hun Wee
  • Publication number: 20120258863
    Abstract: An MOCVD apparatus and process for producing multi-layer HTS-coated tapes with increased current capacity which includes multiple liquid precursor sources, each having an associated pump and vaporizer, the outlets of which feed a multiple compartment showerhead apparatus within an MOCVD reactor. The multiple compartment showerhead apparatus is located in close proximity to an associated substrate heater which together define multiple deposition sectors in a deposition zone.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 11, 2012
    Applicant: SUPERPOWER, INC.
    Inventors: Venkat Selvamanickam, Hee-Gyoun Lee
  • Patent number: 8268386
    Abstract: A method for manufacturing a high-temperature superconducting conductor includes providing an elongate substrate to a reactor, the reactor having a longitudinal flow distributor. The longitudinal flow distributor has an entrance, a plurality of exits, and an interior distribution member provided between the entrance and the plurality of exits. The method further includes heating at least a portion of the substrate to a temperature sufficient to facilitate the formation of one of a superconducting material and a predecessor to a superconducting material. Further, the method includes flowing at least one precursor into the longitudinal flow distributor, through the entrance thereof, past an internal distribution member, and out through a plurality of exits, thereby longitudinally distributing the at least one precursor to form the superconducting material or predecessor thereof on the substrate.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: September 18, 2012
    Assignee: SuperPower Inc.
    Inventors: Venkat Selvamanickam, Hee-Gyoun Lee
  • Patent number: 8216979
    Abstract: A method of manufacturing a superconducting thin film material includes a vapor phase step of forming a superconducting layer by a vapor phase method and a liquid phase step of forming a superconducting layer by a liquid phase method so that the latter superconducting layer is in contact with the former superconducting layer. Preferably, the method further includes the step of forming an intermediate layer between the former superconducting layer and a metal substrate. The metal substrate is made of a metal, and preferably the intermediate layer is made of an oxide having a crystal structure of any of rock type, perovskite type and pyrochlore type, and the former superconducting layer and the latter superconducting layer both have an RE123 composition. Accordingly, the critical current value can be improved.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: July 10, 2012
    Assignees: Sumitomo Electric Industries, Ltd., International Superconducticvity Technology Center
    Inventors: Shuji Hahakura, Kazuya Ohmatsu, Munetsugu Ueyama, Katsuya Hasegawa
  • Patent number: 8182862
    Abstract: An ion source impinging on the surface of the substrate to be coated is used to enhance a MOCVD, PVD or other process for the preparation of superconducting materials.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: May 22, 2012
    Assignee: SuperPower Inc.
    Inventors: Venkat Selvamanickam, Hee-Gyoun Lee
  • Publication number: 20120077680
    Abstract: Systems, articles, and methods are provided related to nanowire-based detectors, which can be used for light detection in, for example, single-photon detectors. In one aspect, a variety of detectors are provided, for example one including an electrically superconductive nanowire or nanowires constructed and arranged to interact with photons to produce a detectable signal. In another aspect, fabrication methods are provided, including techniques to precisely reproduce patterns in subsequently formed layers of material using a relatively small number of fabrication steps. By precisely reproducing patterns in multiple material layers, one can form electrically insulating materials and electrically conductive materials in shapes such that incoming photons are redirected toward a nearby electrically superconductive materials (e.g., electrically superconductive nanowire(s)). For example, one or more resonance structures (e.g.
    Type: Application
    Filed: May 27, 2011
    Publication date: March 29, 2012
    Applicant: Massachusetts Institute of Technology
    Inventors: Karl K. Berggren, Xiaolong Hu, Daniele Masciarelli
  • Publication number: 20120065072
    Abstract: A superconducting metallic glass transition-edge sensor (MGTES) and a method for fabricating the MGTES are provided. A single-layer superconducting amorphous metal alloy is deposited on a substrate. The single-layer superconducting amorphous metal alloy is an absorber for the MGTES and is electrically connected to a circuit configured for readout and biasing to sense electromagnetic radiation.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 15, 2012
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventor: Charles C. Hays
  • Patent number: 8124171
    Abstract: A method of manufacturing a tape-formed oxide superconductor, in which a tape-formed wire material (6 in FIG. 1) is extended between a pair of reels (5a and 5b). Besides, a reactive gas is supplied form the gas supply ports of a reactive gas supply pipe (3a) vertically to the upper side film surface of the tape-formed wire material (6), so as to react the film body of this tape-formed wire material into a superconducting layer, while at the same time, a gas after the reaction is discharged from the gas discharge ports of discharge pipes (4a and 4b) for discharging the gas after the reaction. Likewise, the reactive gas is supplied vertically to the lower side film surface of the tape-formed wire material (6), so as to react the film body of this tape-formed wire material into a superconducting layer, while at the same time, the gas after the reaction is discharged from the gas discharge ports of discharge pipes (4c and 4d) for discharging the gas after the reaction.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: February 28, 2012
    Assignees: International Superconductivity Technology Center, The Juridical Foundation, SWCC Showa Cable Systems Co., Ltd.
    Inventors: Yuji Aoki, Hiroshi Fuji, Sukeharu Nomoto, Ryo Teranishi, Teruo Izumi, Yuh Shiohara
  • Patent number: 8119187
    Abstract: In a chemical vapor deposition process simple precursors such as a rare earth nitrate or acetate, Ba-nitrate or acetate and Cu-nitrate or acetate are dissolved in an appropriate solvent, preferably water, to form a solution, nebulized into a fine mist and applied to a substrate.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: February 21, 2012
    Assignee: Superpower, Inc.
    Inventor: Venkat Selvamanickam
  • Publication number: 20120035056
    Abstract: A method of making a superconducting article that involves using MOCVD to deposit onto a uniaxially or biaxially textured surface an epitaxial layer that includes a superconducting material such as REBa2Cu3O7 and a secondary phase comprising at least one dopant, the dopant including Nb, Ta and/or V, or combinations thereof.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 9, 2012
    Inventors: TOLGA AYTUG, Mariappan Parans Paranthaman, Victor A. Maroni, Dean J. Miller
  • Patent number: 8043716
    Abstract: Disclosed herein is a gradient thin film, formed on a substrate by simultaneously depositing different materials on the substrate using a plurality of thin film deposition apparatuses provided in a vacuum chamber, wherein the gradient thin film is formed such that the composition thereof is continuously changed depending on the thickness thereof by deposition control plates provided in the path through which the different materials move to the substrate. The gradient thin film is advantageous in that the thin film is formed by simultaneously depositing different materials using various deposition apparatuses, so that the composition thereof is continuously changed depending on the thickness thereof, with the result that the physical properties of a thin film are easily controlled and the number of deposition processes is decreased, and thus processing time and manufacturing costs are decreased, thereby improving economic efficiency.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: October 25, 2011
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Ho Sup Kim, Sang Soo Oh, Tae Hyung Kim, Dong Woo Ha, Kyu Jung Song, Hong Soo Ha, Rock Kil Ko, Nam Jin Lee
  • Patent number: 8034745
    Abstract: Novel articles and methods to fabricate same with self-assembled nanodots and/or nanorods of a single or multicomponent material within another single or multicomponent material for use in electrical, electronic, magnetic, electromagnetic, superconducting and electrooptical devices is disclosed. Self-assembled nanodots and/or nanorods are ordered arrays wherein ordering occurs due to strain minimization during growth of the materials. A simple method to accomplish this when depositing in-situ films is also disclosed. Device applications of resulting materials are in areas of superconductivity, photovoltaics, ferroelectrics, magnetoresistance, high density storage, solid state lighting, non-volatile memory, photoluminescence, thermoelectrics and in quantum dot lasers.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: October 11, 2011
    Inventor: Amit Goyal
  • Patent number: 8012601
    Abstract: In a cold gas spraying method, a gas jet (15) into which particles (19) are introduced is generated with the aid of a cold gas spray gun (20). The kinetic energy of the particles (19) results in a layer being formed on a substrate (13). The substrate is provided with a structured texture (24) which is transferred to the layer (20) that is formed. The method makes it advantageously possible to produce a high-temperature superconducting layer on the substrate (13) by selecting an appropriate particle (19) composition. The process can be additionally supported using a heating device (25) in a subsequent thermal treatment step.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: September 6, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ursus Kruger, Raymond Ullrich
  • Patent number: 7985713
    Abstract: A magnesium boride thin film having a B-rich composition represented by the general formula of MgBx (x=1 to 10) and a superconducting transition temperature of 10K or more has superior crystallinity and orientation and is used as a superconducting material. This thin film is formed by maintaining a film forming environment in a high vacuum atmosphere of 4×10?5 Pa or less, and simultaneously depositing Mg and B on a substrate maintained at a temperature of 200° C. or less so as to grow the film at a growth rate of 0.05 nm/sec or less. It is preferable to supply an Mg vapor and a B vapor into the film forming environment at an Mg/B molar ratio of 1/1 to 12/1.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: July 26, 2011
    Assignee: Incorporated National University Iwate University
    Inventors: Yoshitomo Harada, Masahito Yoshizawa, Haruyuki Endo
  • Patent number: 7919435
    Abstract: The present invention relates to a method for producing a defect-containing superconducting film, the method comprising (a) depositing a phase-separable layer epitaxially onto a biaxially-textured substrate, wherein the phase-separable layer includes at least two phase-separable components; (b) achieving nanoscale phase separation of the phase-separable layer such that a phase-separated layer including at least two phase-separated components is produced; and (c) depositing a superconducting film epitaxially onto said phase-separated components of the phase-separated layer such that nanoscale features of the phase-separated layer are propagated into the superconducting film.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: April 5, 2011
    Assignee: UT-Battelle, LLC
    Inventor: Amit Goyal
  • Patent number: 7910155
    Abstract: A method for manufacturing a high-temperature superconducting conductor includes translating an elongated substrate through a reactor. Further, a high temperature superconducting layer is formed on the substrate translating through the reactor by deposition of a reaction product of metalorganic precursor materials onto the substrate. Further, partial pressure of oxygen is monitored to indirectly monitor supply of metalorganic precursors into the reactor.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: March 22, 2011
    Assignee: Superpower, Inc.
    Inventors: Hee-Gyoun Lee, Venkat Selvamanickam
  • Patent number: 7902119
    Abstract: Porous ceramic superconductors having a film thickness over 0.5 microns are provided. The superconducting material is applied to a vicinal substrate and optionally nanoparticles are inserted to release local strain. The resultant superconductors exhibit improved Jc values compared to nonvicinal (flat) counterparts and those having no nanoparticles.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: March 8, 2011
    Inventors: Judy Wu, Rose Emergo, Timothy Haugan, Paul Barnes
  • Patent number: 7893006
    Abstract: Under one aspect, a method of making a superconductor wire includes providing an oxide superconductor layer overlaying a substrate; forming a substantially continuous barrier layer over the oxide superconductor layer, the barrier layer including metal; depositing a layer of metal particles over the barrier layer, said depositing including applying a liquid including metal particles over the barrier layer; and sintering the layer of metal particles to form a substantially continuous metal layer over the barrier layer. In one or more embodiments, the oxide superconductor layer is oxygen-deficient, and the method may include oxidizing the oxygen-deficient oxide superconductor layer. At least a portion of the sintering and the oxidizing may occur simultaneously, for example by performing them at an oxygen partial pressure and a temperature sufficient to both sinter the metal particles and to oxidize the oxygen-deficient oxide superconductor layer.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: February 22, 2011
    Assignee: American Superconductor Corporation
    Inventors: Yibing Huang, Thomas Kodenkandath, Joseph Lynch, Martin W. Rupich, Wei Zhang
  • Publication number: 20110034338
    Abstract: A superconducting article includes a substrate having a biaxially textured surface, and an epitaxial biaxially textured superconducting film supported by the substrate. The epitaxial superconducting film includes particles of Ba2RETaO6 and is characterized by a critical current density higher than 1 MA/cm2 at 77K, self-field. In one embodiment the particles are assembled into columns. The particles and nanocolumns of Ba2RETaO6 defects enhance flux pinning which results in improved critical current densities of the superconducting films. Methods of making superconducting films with Ba2RETaO6 defects are also disclosed.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 10, 2011
    Inventors: Amit Goyal, Claudia Cantoni, Eliot Specht, Sung-Hun Wee
  • Publication number: 20110034336
    Abstract: A superconducting article includes a substrate having a biaxially textured surface, and an epitaxial biaxially textured superconducting film supported by the substrate. The epitaxial superconducting film includes particles of Ba2RENbO6 and is characterized by a critical current density higher than 1 MA/cm2 at 77K, self-field. In one embodiment the particles are assembled into columns. The particles and nanocolumns of Ba2RENbO6 defects enhance flux pinning which results in improved critical current densities of the superconducting films. Methods of making superconducting films with Ba2RENbO6 defects are also disclosed.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 10, 2011
    Inventors: Amit Goyal, Sung-Hun Wee, Eliot Specht, Claudia Cantoni
  • Patent number: 7838061
    Abstract: Disclosed herein is a method of fabricating a high temperature superconducting film in a vacuum chamber through auxiliary cluster beam spraying using an evaporation method, wherein a high temperature superconducting material is deposited on a substrate in a vapor state by evaporating the high temperature superconducting material, and at the same time, a cluster beam material is formed into gas atoms by heating the cluster beam material charged in a housing, and the formed gas atoms pass through a nozzle of an inlet of the housing and then are sprayed and grown on the substrate in the form of the cluster beam, thereby forming pinning centers in the high temperature superconducting film.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: November 23, 2010
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Sang Soo Oh, Ho Seop Kim, Kyu Jung Song, Do Jun Youm, Sun Mi Lim, Yong Hwan Jung, Sang Moo Lee, Ye Hyun Jung, Jae Eun Yoo
  • Publication number: 20100267568
    Abstract: The present invention relates to a superconducting film having a substrate and a superconductor layer formed on the substrate, in which nano grooves are formed parallel to a current flowing direction on a substrate surface on which the superconductor layer is formed and two-dimensional crystal defects are introduced in the superconductor layer on the nano grooves, and a method of manufacturing this superconducting film. A superconducting film of the invention, which is obtained at low cost and has very high Jc, is useful in applications such as cables, magnets, shields, current limiters, microwave devices, and semifinished products of these articles.
    Type: Application
    Filed: April 30, 2010
    Publication date: October 21, 2010
    Inventors: Kaname Matsumoto, Masashi Mukaida, Yutaka Yoshida, Ataru Ichinose, Shigeru Horii
  • Patent number: 7718574
    Abstract: Methods for depositing, at a very high deposition rate, a biaxially-textured film on a continuously moving metal tape substrate are disclosed. These methods comprise: depositing a film on the substrate with a deposition flux having an oblique incident angle of about 5° to about 80° from the substrate normal, while simultaneously bombarding the deposited film using an ion beam at an ion beam incident angle arranged along either a best ion texture direction of the film or along a second best ion texture direction of the film, thereby forming the biaxially-textured film, wherein a deposition flux incident plane is arranged parallel to a direction along which the biaxially-textured film has a fast in-plane growth rate. Superconducting articles comprising a substrate, a biaxially-textured film deposited on said substrate by said methods above; and a superconducting layer disposed on the biaxially-textured film are also disclosed.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: May 18, 2010
    Assignee: SuperPower, Inc.
    Inventors: Xuming Xiong, Venkat Selvamanickam
  • Patent number: 7708974
    Abstract: Nanoparticles comprising tungsten, methods of manufacturing nanoparticles comprising tungsten, and applications of nanoparticles comprising tungsten, such as electronics, optical devices, photonics, reagents for fine chemical synthesis, pigments, and catalysts are provided.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: May 4, 2010
    Assignee: PPG Industries Ohio, Inc.
    Inventor: Tapesh Yadav
  • Publication number: 20100081574
    Abstract: The present invention relates to a method for producing a defect-containing superconducting film, the method comprising (a) depositing a phase-separable layer epitaxially onto a biaxially-textured substrate, wherein the phase-separable layer includes at least two phase-separable components; (b) achieving nanoscale phase separation of the phase-separable layer such that a phase-separated layer including at least two phase-separated components is produced; and (c) depositing a superconducting film epitaxially onto said phase-separated components of the phase-separated layer such that nanoscale features of the phase-separated layer are propagated into the superconducting film.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: UT-BATTELLE, LLC
    Inventor: Amit Goyal
  • Patent number: 7622426
    Abstract: The present invention is a method for producing a crystalline end-product. The method comprising exposing a fluoride-containing precursor to a hydrogen fluoride absorber under conditions suitable for the conversion of the precursor into the crystalline end-product.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: November 24, 2009
    Assignee: Brookhaven Science Associates, LLC
    Inventors: Vyacheslav Solovyov, Harold Wiesmann
  • Publication number: 20090270260
    Abstract: An RE123-based oxide superconductor characterized by comprising a conductive layer containing an REBa2Cu3O7-?-based oxide superconductor formed using a mixed material of at least RE2BaO4 and a Bax—Cuy—Oz-based material and a holding member which holds said conductive layer, where, RE is one type or more of elements selected from La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and Y.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 29, 2009
    Inventors: Shoji Tanaka, Naomichi Sakai, Takato Machi, Muralidhar Miryala
  • Publication number: 20090239753
    Abstract: A method of manufacturing a superconducting thin film material includes a vapor phase step of forming a superconducting layer by a vapor phase method and a liquid phase step of forming a superconducting layer by a liquid phase method so that the latter superconducting layer is in contact with the former superconducting layer. Preferably, the method further includes the step of forming an intermediate layer between the former superconducting layer and a metal substrate. The metal substrate is made of a metal, and preferably the intermediate layer is made of an oxide having a crystal structure of any of rock type, perovskite type and pyrochlore type, and the former superconducting layer and the latter superconducting layer both have an RE123 composition. Accordingly, the critical current value can be improved.
    Type: Application
    Filed: January 17, 2007
    Publication date: September 24, 2009
    Applicant: International Superconductivity Technology Center, the Juridical Foundation
    Inventors: Shuji Hahakura, Kazuya Ohmatsu, Munetsugu Ueyama, Katsuya Hasegawa
  • Publication number: 20090239754
    Abstract: In a cold gas spraying method, a gas jet (15) into which particles (19) are introduced is generated with the aid of a cold gas spray gun (20). The kinetic energy of the particles (19) results in a layer being formed on a substrate (13). The substrate is provided with a structured texture (24) which is transferred to the layer (20) that is formed. The method makes it advantageously possible to produce a high-temperature superconducting layer on the substrate (13) by selecting an appropriate particle (19) composition. The process can be additionally supported using a heating device (25) in a subsequent thermal treatment step.
    Type: Application
    Filed: December 6, 2005
    Publication date: September 24, 2009
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Ursus Krüger, Raymond Ullrich
  • Patent number: 7560291
    Abstract: A layered article of manufacture and a method of manufacturing same is disclosed. A substrate has a biaxially textured MgO crystalline layer having the c-axes thereof inclined with respect to the plane of the substrate deposited thereon. A layer of one or more of YSZ or Y2O3 and then a layer of CeO2 is deposited on the MgO. A crystalline superconductor layer with the c-axes thereof normal to the plane of the substrate is deposited on the CeO2 layer. Deposition of the MgO layer on the substrate is by the inclined substrate deposition method developed at Argonne National Laboratory. Preferably, the MgO has the c-axes thereof inclined with respect to the normal to the substrate in the range of from about 10° to about 40° and YBCO superconductors are used.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: July 14, 2009
    Assignee: UChicago Argonne, LLC
    Inventors: Uthamalingam Balachandran, Beihai Ma, Dean Miller
  • Publication number: 20090149330
    Abstract: A method of manufacturing a superconducting thin film material includes the step of forming an intermediate layer, the step of forming one superconducting layer to be in contact with the intermediate layer and the step of forming another superconducting layer by a vapor phase method to be in contact with the one superconducting layer. Between the step of forming the intermediate layer and the step of forming the one superconducting layer, the intermediate layer is kept in a reduced water vapor ambient or reduced carbon dioxide ambient or, between the step of forming one superconducting layer and the step of forming another superconducting layer, the one superconducting layer is kept in a reduced water vapor ambient or reduced carbon dioxide ambient. Thus, the critical current value can be improved.
    Type: Application
    Filed: January 17, 2007
    Publication date: June 11, 2009
    Inventors: Shuji Hahakura, Kazuya Ohmatsu, Munetsugu Ueyama, Katsuya Hasegawa
  • Patent number: 7507691
    Abstract: A Bi-based oxide superconductor thin film whose c-axis is oriented parallel to the substrate and whose a-axis (or b-axis) is oriented perpendicular to the substrate, is manufactured in order to obtain a high performance layered Josephson junction using a Bi-based oxide superconductor. The method of manufacturing an a-axis oriented Bi-based oxide superconductor thin film, involves an epitaxial growth process using an LaSrAlO4 single crystal substrate of a (110) plane or a LaSrGaO4 single crystal substrate of a (110) plane, for which the lattice constant matches well with a (100) plane of a Bi-2223 oxide superconductor. By this method, rather than the normally easily obtained Bi-2212, an a-axis oriented film of Bi-2223 showing an extremely high superconductive transition temperature even for a Bi-based oxide superconductor can be selectively manufactured.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: March 24, 2009
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventor: Kazuhiro Endo
  • Publication number: 20090075824
    Abstract: To provide an RE-based oxide superconducting sintered body that can be used as a target applicable to a laser ablation method without bonding it to a backing plate, and a manufacturing method of the same. Each kind of powder or solution is prepared, and when a composition formula of an RE-based oxide superconductor is expressed by REaBabCucOx, raw materials are weighed and mixed so as to satisfy a+b+c=6, 0.95<a<1.05 and 1.505?c/b<1.6, and thereafter calcinations, pulverization, sintering, pulverization, and molding are carried out to obtain the RE-based oxide superconducting sintered body, and this RE-based oxide superconducting sintered body is used as a laser ablation target.
    Type: Application
    Filed: August 11, 2006
    Publication date: March 19, 2009
    Inventor: Masahiro Kojima
  • Publication number: 20090062128
    Abstract: A magnesium boride thin film having a B-rich composition represented by the general formula of MgBx (x=1 to 10) and a superconducting transition temperature of 10K or more has superior crystallinity and orientation and is used as a superconducting material. This thin film is formed by maintaining a film forming environment in a high vacuum atmosphere of 4×10?5 Pa or less, and simultaneously depositing Mg and B on a substrate maintained at a temperature of 200° C. or less so as to grow the film at a growth rate of 0.05 nm/sec or less. It is preferable to supply an Mg vapor and a B vapor into the film forming environment at an Mg/B molar ratio of 1/1 to 12/1.
    Type: Application
    Filed: March 22, 2006
    Publication date: March 5, 2009
    Applicant: INCORPORATED NATIONAL UNIVERSITY IWATE UNIVERSITY
    Inventors: Yoshitomo Harada, Masahito Yoshizawa, Haruyuki Endo
  • Publication number: 20090048113
    Abstract: A superconducting thin film is disclosed having columnar pinning centers utilizing nano dots, and comprising nano dots (3) which are formed insularly on a substrate (2) and three-dimensionally in shape and composed of a material other than a superconducting material and also other than a material of which the substrate is formed, columnar defects (4) composed of the superconducting material and grown on the nano dots (3), respectively, a lattice defect (6) formed on a said columnar defect (4), and a thin film of the superconducting material (5) formed in those areas on the substrate which are other than those where said columnar defects are formed.
    Type: Application
    Filed: October 9, 2008
    Publication date: February 19, 2009
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Ioan Adrian Crisan, Hideo Ihara, Yoshiko Ihara, Hideyo Ihara, Hidetaka Ihara, Gen-ei Ihara, Chiaki Ihara
  • Publication number: 20080318793
    Abstract: The invention relates to a method for producing a superconductive element to be used as a wire-in-channel superconductor in magnetic resonance imaging (MRI) and in nuclear magnetic resonance (NMR) applications, which superconductive element contains a superconductive wire and a copper component having a longitudinal groove and the superconductive wire being positioned in the groove. In order to produce the wire-in-channel superconductive element by a mechanical contact between the superconductive wire and a wall of the groove in the copper component, at least one contact surface is coated with a lead free solder material before having the mechanical contact. In order to enhance the thermal and electrical conduction and to create a bond between the said components the soldering material is fused in annealing process step.
    Type: Application
    Filed: May 11, 2006
    Publication date: December 25, 2008
    Inventor: Jukka Somerkoski