Search Patents
  • Enhanced pinning in YBCO films with BaZrO3 nanoparticles
    Publication number: 20060025310
    Abstract: A process and composition of matter are provided and involve flux pinning in thin films of high temperature superconductive oxides such as YBCO by inclusion of particles including barium and a group 4 or group 5 metal, such as zirconium, in the thin film.
    Type: Application
    Filed: July 27, 2004
    Publication date: February 2, 2006
    Inventors: Judith Driscoll, Stephen Foltyn
  • SUPERCONDUCTING WIRE AND METHOD OF FORMING THE SAME
    Publication number: 20220140222
    Abstract: Provided is a superconducting wire. The superconducting wire comprises a substrate, a superconducting film on the substrate and a pinning center in the superconducting film. The superconducting film includes Y1-xRExBCO and the pinning center has an additive of Ba2YNbO6.
    Type: Application
    Filed: April 14, 2021
    Publication date: May 5, 2022
    Inventors: Seung-Hyun MOON, Judith DRISCOLL, Ahmed KURUSUMOVIC, John FEIGHAN
  • Enhanced pinning in mixed rare earth-123 films
    Publication number: 20060073974
    Abstract: An superconductive article and method of forming such an article is disclosed, the article including a substrate and a layer of a rare earth barium cuprate film upon the substrate, the rare earth barium cuprate film including two or more rare earth metals capable of yielding a superconductive composition where ion size variance between the two or more rare earth metals is characterized as greater than zero and less than about 10×10?4, and the rare earth barium cuprate film including two or more rare earth metals is further characterized as having an enhanced critical current density in comparison to a standard YBa2Cu3Oy composition under identical testing conditions.
    Type: Application
    Filed: August 25, 2004
    Publication date: April 6, 2006
    Inventors: Judith Driscoll, Stephen Foltyn
  • Multiferroics that are both ferroelectric and ferromagnetic at room temperature
    Publication number: 20120177902
    Abstract: Multiferroic articles including highly resistive, strongly ferromagnetic strained thin films of BiFe0.5Mn0.5O3 (“BFMO”) on (001) strontium titanate and Nb-doped strontium titanate substrates were prepared. The films were tetragonal with high epitaxial quality and phase purity. The magnetic moment and coercivity values at room temperature were 90 emu/cc (H=3 kOe) and 274 Oe, respectively. The magnetic transition temperature was strongly enhanced up to approximately 600 K, which is approximately 500 K higher than for pure bulk BiMnO3.
    Type: Application
    Filed: September 1, 2011
    Publication date: July 12, 2012
    Inventors: Judith L. Driscoll, Quanxi Jia
  • Enhanced pinning in YBCO films with BaZrOnanoparticles
    Patent number: 7737087
    Abstract: A process and composition of matter are provided and involve flux pinning in thin films of high temperature superconductive oxides such as YBCO by inclusion of particles including barium and a group 4 or group 5 metal, such as zirconium, in the thin film.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: June 15, 2010
    Assignee: Los Alamos National Security, LLC
    Inventors: Judith L. Driscoll, Stephen R. Foltyn
  • High temperature superconductors
    Patent number: 8216977
    Abstract: Compositions are disclosed of a matrix of a high temperature superconductive oxide such as YBCO, with non-superconductive particles distributed in the matrix. The non-superconductive particles comprise at least one rare earth element (RE) and at least one of tantalum (Ta) and niobium (Nb). Of particular interest are non-superconductive particles of composition RE-Ta3O7 (RTO), where RE is Yb, Er, Gd or Sm, disposed in a YBCO superconductive matrix.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: July 10, 2012
    Assignee: Cambridge Enterprise Limited
    Inventors: Sophie-Ann Harrington, Judith Macmanus-Driscoll
  • HIGH TEMPERATURE SUPERCONDUCTORS
    Publication number: 20110136670
    Abstract: Compositions are disclosed of a matrix of a high temperature superconductive oxide such as YBCO, with non-superconductive particles distributed in the matrix. The non-superconductive particles comprise at least one rare earth element (RE) and at least one of tantalum (Ta) and niobium (Nb). Of particular interest are non-superconductive particles of composition RE-Ta3O7 (RTO), where RE is Yb, Er, Gd or Sm, disposed in a YBCO superconductive matrix.
    Type: Application
    Filed: August 5, 2009
    Publication date: June 9, 2011
    Applicant: CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Sophie-Ann Harrington, Judith Macmanus-Driscoll
  • Enhanced pinning in mixed rare earth-123 films
    Patent number: 7547661
    Abstract: An superconductive article and method of forming such an article is disclosed, the article including a substrate and a layer of a rare earth barium cuprate film upon the substrate, the rare earth barium cuprate film including two or more rare earth metals capable of yielding a superconductive composition where ion size variance between the two or more rare earth metals is characterized as greater than zero and less than about 10×10?4, and the rare earth barium cuprate film including two or more rare earth metals is further characterized as having an enhanced critical current density in comparison to a standard YBa2Cu3Oy composition under identical testing conditions.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: June 16, 2009
    Assignee: Los Alamos National Security, LLC
    Inventors: Judith L. Driscoll, Stephen R. Foltyn
  • Memristor Comprising Film with Comb-Like Structure of Nanocolumns of Metal Oxide Embedded in a Metal Oxide Matrix
    Publication number: 20140346423
    Abstract: Films having a comb-like structure of nanocolumns of Sm2O3 embedded in a SrTiO3 formed spontaneously on a substrate surface by pulsed laser deposition. In an embodiment, the nanocolumns had a width of about 20 nm with spaces between nanocolumns of about 10 nm. The films exhibited memristive behavior, and were extremely uniform and tunable. Oxygen deficiencies were located at vertical interfaces between the nanocolumns and the matrix. The substrates may be single-layered or multilayered.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Applicant: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Judith L. Driscoll, ShinBuhm Lee, Quanxi Jia
  • Coated conductor with simplified layer architecture
    Publication number: 20090105080
    Abstract: A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula RE2?xB2+xO7 with RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and ?0.4?x?+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.
    Type: Application
    Filed: June 30, 2008
    Publication date: April 23, 2009
    Inventors: Dirk Isfort, Joachim Bock, Judith Louise Driscoll
  • Memristor comprising film with comb-like structure of nanocolumns of metal oxide embedded in a metal oxide matrix
    Patent number: 9029985
    Abstract: Films having a comb-like structure of nanocolumns of Sm2O3 embedded in a SrTiO3 formed spontaneously on a substrate surface by pulsed laser deposition. In an embodiment, the nanocolumns had a width of about 20 nm with spaces between nanocolumns of about 10 nm. The films exhibited memristive behavior, and were extremely uniform and tunable. Oxygen deficiencies were located at vertical interfaces between the nanocolumns and the matrix. The substrates may be single-layered or multilayered.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: May 12, 2015
    Assignee: Los Alamos National Security, LLC
    Inventors: Judith L. Driscoll, ShinBuhm Lee, Quanxi Jia
  • Control of Strain Through Thickness in Epitaxial Films Via Vertical Nanocomposite Heteroepitaxy
    Publication number: 20120058323
    Abstract: A two-dimensional vertical heteroepitaxial strain controlled composite is grown. The strain-controlling phase can be benign in all other respects so that the functional properties of the parent phase are unchanged, improved/enhanced, and/or manipulated. The new composite is advantageous because there is no need for expensive specialized crystals and because there are no thickness limitations.
    Type: Application
    Filed: August 1, 2008
    Publication date: March 8, 2012
    Applicant: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Judith L. Driscoll, Quanxi Jia, Patrick Zerrer
  • Coated conductor with simplified layer architecture
    Patent number: 7910521
    Abstract: A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula RE2?xB2+xO7 with RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and ?0.4?x?+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: March 22, 2011
    Inventors: Dirk Isfort, Joachim Bock, Judith Louise Driscoll, Ahmed Kursumovic
  • Coated conductor with simplified layer architecture
    Patent number: 8008233
    Abstract: A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula RE2?xB2+xO7 with RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and ?0.4?x?+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: August 30, 2011
    Assignees: Nexans, Cambridge Enterprise Limited
    Inventors: Dirk Isfort, Joachim Bock, Judith Louise Driscoll, Ahmed Kursumovic
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