Next To Second Metal Compound-containing Layer Patents (Class 428/693.1)
  • Patent number: 7727643
    Abstract: A composite having a stack of a repeating pattern of layers of: a layer of a nonconductive magnetic material, a first layer of a dielectric material; a layer of a semiconducting material; and a second layer of the dielectric material. The composite has a magnetic resonance frequency and a magnetic anti-resonance frequency and a plasma frequency at higher frequencies than the magnetic resonance frequency.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: June 1, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Frederic J Rachford
  • Patent number: 7714793
    Abstract: A superior high-frequency magnetic material having a smaller ratio (??/??) of a real part ?? of permeability and an imaginary part ?? of permeability in a high-frequency region and an antenna system using thereof are provided. The high-frequency magnetic material includes a substrate and a composite magnetic film formed on the substrate and made of a magnetic phase forming a plurality of columnar bodies whose longitudinal direction is directed in a direction perpendicular to a surface of the substrate and an insulator phase filling gaps of the columnar bodies. The magnetic phase contains at least one of Nb, Zr, and Hf, and Fe and B, is amorphous, and has in-plane uniaxial anisotropy of Hk2/Hk1?3 and Hk2?3.98×103 A/m when a minimal anisotropic magnetic field in a plane parallel to the surface of the substrate is Hk1 and a maximal anisotropic magnetic field is Hk2.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: May 11, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoko Eguchi, Maki Yonetsu, Naoyuki Nakagawa, Seiichi Suenaga
  • Patent number: 7700193
    Abstract: A core-shell structure with magnetic, thermal, and optical characteristics. The optical absorption band is tailorable by choice of the mixing ratio of the core/shell component to give the desired shell thickness. The core-shell structure is particularly suitable for biomedical applications such as MRI (magnetic resonance imaging) developer, specific tissue identification developer, and magnetic thermal therapy.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: April 20, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Yao Chen, Wen-Hsiang Chang, Chin-I Lin, Shian-Jy Jassy Wang, Yuh-Jiuan Lin
  • Patent number: 7700194
    Abstract: A high-frequency magnetic material is provided and includes: an oxide phase including: a first oxide of a first element being at least one selected from the group consisting of Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, a rare-earth element, Ba, and Sr, and a second oxide of a second element being at least one selected from the group consisting of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, and Zn, the first oxide and at least a part of the second oxide being formed into a solid solution; and magnetic metal particles including at least one of Fe and Co and having a particle size of 1 to 100 nm, the magnetic metal particles being deposited on a surface and inside of the oxide phase, the magnetic metal particles occupying 50% of a volume of the high-frequency magnetic material exclusive of a void.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: April 20, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomohiro Suetsuna, Seiichi Suenaga, Kouichi Harada
  • Patent number: 7655325
    Abstract: A rare-earth magnet includes a magnet body made of an R—Fe—B based rare-earth magnet material (where R is at least one rare-earth element) and a metal film that has been deposited on the surface of the magnet body. The magnet further includes a plurality of reaction layers between the magnet body and the metal film. The reaction layers include: a first reaction layer, which contacts with at least some of R2Fe14B type crystals, included in the magnet body, to have received the rare-earth element that has been included in the R2Fe14B type crystals; and a second reaction layer, which is located between the first reaction layer and the metal film and which has a lower rare-earth element concentration than that of the first reaction layer.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: February 2, 2010
    Assignee: Hitachi Metals, Ltd.
    Inventor: Tomoki Fukagawa
  • Patent number: 7655324
    Abstract: An electro-magnetic storage device and method are disclosed. In one embodiment, a memory device includes a first magnetic material to attract a movable structure (e.g., a ferromagnetic material) when a first voltage is applied between the first magnetic material and the movable structure, and a second magnetic material to release the movable structure when a second voltage is applied between the second magnetic material and the movable structure. The movable arm may create a closed circuit when the second voltage is applied between the second magnetic material and the movable structure. There may be a vacuum-gap between the movable structure and at least one of the first magnetic material and/or the second magnetic material. The memory device may be stackable on other memory devices having similar properties, and/or electrically coupled with other memory devices having similar properties in a memory array.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: February 2, 2010
    Inventor: Sridhar Kasichainula
  • Patent number: 7648774
    Abstract: An electromagnetic noise suppressor including a ferrite film is formed by regularly arranging constituents such as magnetized grains or one analogous to that. In the ferrite film, the constituents have at least one of the uniaxial anisotropy and the multiaxial anisotropy. The ferrite film has the magnetic anisotropy or the magnetic isotropy. The ferrite film is formed by a plating method in the presence of a magnetic field.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: January 19, 2010
    Assignee: NEC Tokin Corporation
    Inventors: Koichi Kondo, Okikuni Takahata, Tatsuya Chiba, Hiroshi Ono, Shigeyoshi Yoshida, Masanori Abe, Masahiro Yamaguchi
  • Patent number: 7622202
    Abstract: A soft magnetic material includes a plurality of composite magnetic particles (40) each including a metal magnetic particle (10) and an insulation coating (20) covering the surface of the metal magnetic particle (10), wherein the insulation coating (20) contains Si (silicon), and 80% or more of Si contained in the insulation coating constitutes a silsesquioxane skeleton. Therefore, it is possible to effectively decrease a hysteresis loss while suppressing an increase in eddy-current loss.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: November 24, 2009
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toru Maeda, Kazuyuki Maeda, Yasushi Mochida, Koji Mimura
  • Patent number: 7604875
    Abstract: Materials suitable for medical and dental implants with magnetic susceptibility matched to surrounding environment to reduce artifacts in nuclear magnetic resonance imaging. Paramagnetic and diamagnetic materials may be added to ceramics and polymer resins to adjust magnetic susceptibility. Other embodiments are described and claimed.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: October 20, 2009
    Assignee: California Institute of Technology
    Inventor: Shawn Wagner
  • Publication number: 20090246543
    Abstract: The present invention relates to forming the material represented by the following formula (1) into a layer having hexagonal crystalline structure, which is different from the orthorhombic crystalline structure of the material in bulk phase, so that the material can be used more effectively in various fields requiring multiferroic properties by obtaining multiferroic properties enhanced than the conventional multiferroic materials. RMnO3, (R=Lanthanide) . . .
    Type: Application
    Filed: February 16, 2007
    Publication date: October 1, 2009
    Applicant: SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATION
    Inventors: Tae Won Noh, Jong Gul Yoon, Jung Hyuk Lee
  • Patent number: 7566506
    Abstract: A magnetic body includes a plurality of laminated inner layers and an insulating enclosure fully enclosing the inner layers therein. The inner layers include a first or central metal layer, each one of upper and lower sides of which is sequentially provided with a first insulating layer, a second metal layer, a filter layer, a second insulating layer, a third metal layer, and a light-absorbing material layer. Each of the metal layers is negatively charged and formed by coating a specific high-temperature vaporized metal element on an entire surface of an insulating body. The filter layer is woven from an insulating material and has at least 144 millions of meshes per square inch. The light-absorbing material layer stores pre-absorbed light energy. The magnetic body with the above-described structure produces a radial magnetic field of force that provides enhanced magnetizing effect.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: July 28, 2009
    Inventor: Jen-Chieh Wang
  • Publication number: 20090061256
    Abstract: An electromagnetic noise suppressor including a ferrite film is formed by regularly arranging constituents such as magnetized grains or one analogous to that. In the ferrite film, the constituents have at least one of the uniaxial anisotropy and the multiaxial anisotropy. The ferrite film has the magnetic anisotropy or the magnetic isotropy. The ferrite film is formed by a plating method in the presence of a magnetic field.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 5, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Koichi Kondo, Okikuni Takahata, Tatsuya Chiba, Hiroshi Ono, Shigeyoshi Yoshida, Masanori Abe, Masahiro Yamaguchi
  • Patent number: 7492091
    Abstract: A diffusion barrier system for a display device comprising a layer system with at least two layers of dielectric material, wherein at least two adjacent layers of that layer system comprise the same material. A respective method for manufacturing such a diffusion barrier system in a single process chamber of a plasma deposition system has the steps of introducing a substrate to be treated in said process chamber, discretely varying in a controlled manner during deposition at least one process parameter in the process chamber, without completely interrupting such process parameter, which results in layers with different properties and finally unloading said substrate from said process.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: February 17, 2009
    Assignee: OC Oerlikon Balzers AG
    Inventors: Maryam Kharrazi-Olsson, Hai Tran Quoc, Alice Gallissian
  • Publication number: 20090042058
    Abstract: A magnetic semiconductor material contains at least one type of transition metals (Mn2+, Fe3+, Ru3+, Re2+, and Os3+) having five electrons in the d atomic orbital as a magnetic ion, in which the magnetic semiconductor material exhibits n-type electrical conduction by injection of an electron carrier and p-type electric conduction by injection of a hole carrier. A specific example is a layered oxy-pnictide compound represented by LnMnOPn (wherein Ln is at least one type selected from Y and rare earth elements of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and Pn is at least one selected from pnicogen elements of N, P, As, Bi, and Sb). A high-sensitivity magnetic sensor, current sensor, or memory device can be made by using a magnetic pn homojunction structure made of thin films composed of the magnetic semiconductor material.
    Type: Application
    Filed: August 1, 2006
    Publication date: February 12, 2009
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Masahiro Hirano, Hidenori Hiramatsu, Toshio Kamiya, Hiroshi Yanagi, Eiji Motomitsu
  • Patent number: 7473478
    Abstract: A compact oscillator in which the oscillation frequency can be adjusted to a desired value is provided. The oscillator includes: a magnetoresistive effect element comprising a pinned layer, a nonmagnetic spacer layer, and a free layer of which magnetization direction is changeable that are stacked in that order, a magnetization direction of the pinned layer being substantially fixed along a direction perpendicular to a stack direction; a bias magnetic field application unit for applying a bias magnetic field to the free layer in a direction that is perpendicular to the stack direction and is different from the magnetization direction of the pinned layer; and an adjusting magnetic field application unit for applying an adjusting magnetic field to the free layer in a direction that is perpendicular to the stack direction and is different from the direction of the bias magnetic field.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: January 6, 2009
    Assignee: TDK Corporation
    Inventors: Rachid Sbiaa, Isamu Sato, Haruyuki Morita
  • Patent number: 7474094
    Abstract: Methods of reorienting ferromagnetic layers of a plurality of magnetoresistive elements and structures formed by the methods. The plurality of magnetoresistive elements, preferably GMR multilayer elements, are manufactured and arranged on a planar substrate. The method effectively allows selective orientation and reorientation of distinct ferromagnetic layers of a subset of the magnetoresistive elements on the substrate. The methods make either use of subsequent annealing processes making use of magnetic fields pointing in different directions. Prior to application of a subsequent annealing process, a complimentary subset of magnetoresistive elements is effectively shielded by selective deposition of a soft-magnetic shielding layer. Alternatively, a single annealing process can be performed when an externally applied magnetic field is locally modified by soft-magnetic structures, such as fluxguides.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: January 6, 2009
    Assignee: International Business Machines Corporation
    Inventors: Johannes Paul, Rolf Schaefer
  • Publication number: 20090004451
    Abstract: A composite comprises a substrate and a fluoride, oxide, nitride or boride of a substantially non-magnetic cation on the substrate, the composite exhibiting ferromagnetic properties at room temperature. The composite may be in the form of a film.
    Type: Application
    Filed: July 28, 2005
    Publication date: January 1, 2009
    Inventors: John Michael Coey, Munuswamy Venkatesan, Ciara Bridget Fitzgerald
  • Patent number: 7459218
    Abstract: Discloses is a rewritable thin image display sheet, an image display apparatus and an image display system. In the image display system, a low-melting-point wax 18 with a magnetic powder 16 dispersed therein is held between a heat-generation layer 12 and a transparent layer 14 which are disposed spaced apart from one another, and a zone of the low-melting-point wax 18 corresponding to a pixel for image display is selectively heated and molted by the heat-generation layer 12. Then, the magnetic powder 16 in the molten zone is displaced toward the transparent layer 14 so as to display a given image on the transparent layer. The rewritable thin image display sheet, the image display apparatus and the image display system can reliably display an image in a rewritable state while achieving a significantly simplified structure.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: December 2, 2008
    Assignee: Majima Laboratory Inc.
    Inventor: Osamu Majima
  • Patent number: 7400143
    Abstract: A magnetic bias film 9 includes a magnetic bias magnet 11 that has magnetic layers and generates a magnetic field within a plane perpendicular to a lamination direction of the magnetic layers, which is manufactured in the shape of substantially a rectangular prism having a long side, a short side, and a thickness (in the lamination direction) in order of decreasing lengths. A ratio of the long side with respect to the short side of the magnetic bias magnet 11 in length is in a range of 5 to 200.
    Type: Grant
    Filed: September 6, 2004
    Date of Patent: July 15, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobukazu Hayashi, Kazuhiro Onaka, Yukio Nakao, Masataka Tagawa, Kouji Nabetani, Masako Yamaguchi
  • Publication number: 20080166592
    Abstract: A magnetic material includes a substrate and a composite magnetic film formed on the substrate. The composite magnetic film comprises a plurality of columnar members formed on the substrate and having a longitudinal direction perpendicular to a surface of the substrate, each of the columnar members containing a magnetic metal or a magnetic alloy selected from at least one of Fe, Co, and Ni, and an inorganic insulator formed between the columnar members and selected from an oxide, a nitride, and fluoride of metal. The composite magnetic film has a minimum anisotropy magnetic field Hk1 in a surface parallel to the substrate surface and a maximum anisotropy magnetic field Hk2 in a surface parallel to the substrate surface, a ratio Hk2/Hk1 is greater than 1.
    Type: Application
    Filed: March 17, 2008
    Publication date: July 10, 2008
    Inventors: Maki Yonetsu, Naoyuki Nakagawa, Seiichi Suenaga, Tomohiro Suetsuna, Shinya Sakurada
  • Patent number: 7374826
    Abstract: Magnetic field structures composed of stacked magnetic laminae that are magnetically oriented perpendicular to their planes and configured to cause a volume charge density and cancel the field effects of unwanted surface negative charges are provided. This arrangement causes a uniform volume magnetic charge density, which results in a magnetic field normal to the laminae. The stacked magnetic laminae magnetic field structure cancel the field effects of the deleterious unwanted surface charges because these surface charges are so situated that their contributions to the internal magnetic field mutually cancel each other, and thus they are no longer detrimental to the magnetic field created by the volume charge density. One embodiment provides a planar magnetic field gradient source structure.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: May 20, 2008
    Assignee: The United States of America as represented by the Sceretary of the Army
    Inventor: Herbert A. Leupold
  • Patent number: 7371472
    Abstract: In a permanent magnet ring (1) formed by arranging a plurality of unit permanent magnets (21a, 21b, 21c . . . ), each of a plurality of the unit permanent magnets (21a, 21b, 21c . . . ) is formed in a circular cylindrical shape having a circular cross section, and a predetermined number of the unit permanent magnets are magnetically attracted each other so as to form a ring shape having a predetermined size, so that it is possible for the user to easily structure the permanent magnet ring (1) having a desired size, and it is possible to attach as many the unit permanent magnets as possible so as to be able to apply proper magnetic force lines to each part of the body.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: May 13, 2008
    Assignee: Sagami Chemical Metal Co., Ltd.
    Inventor: Shigeo Fukuda
  • Publication number: 20080075975
    Abstract: A magnetic core includes a tape comprising a magnetic film disposed on a substrate. The tape is arranged in a winding having a number of turns to form the magnetic core. The magnetic film comprises a magnetic material characterized by a coercivity of less than about ten Oersteds (10 Oe). A transformer includes the magnetic core, and a number of electrically conductive windings, where each of the windings extends around the magnetic core in at least one turn. An inductor includes the magnetic core, and an electrically conductive winding extending around the magnetic core in a number of turns.
    Type: Application
    Filed: September 26, 2006
    Publication date: March 27, 2008
    Inventors: John Stanley Glaser, Francis Johnson
  • Publication number: 20080063890
    Abstract: Materials suitable for medical and dental implants with magnetic susceptibility matched to surrounding environment to reduce artifacts in nuclear magnetic resonance imaging. Paramagnetic and diamagnetic materials may be added to ceramics and polymer resins to adjust magnetic susceptibility. Other embodiments are described and claimed.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 13, 2008
    Inventor: Shawn Wagner
  • Patent number: 7288333
    Abstract: A soft magnetic film of the present invention is a plated film composed of Co and Fe, and columnar crystals extending in the film thickness direction are provided. In the present invention, columnar crystals extending in the film thickness direction are provided so that an improvement in the surface roughness of the film surface and an improvement in the corrosion resistance can be achieved. Furthermore, the saturation magnetic flux density Bs can also be improved by making the crystal fine and eliminating the need for addition of the noble metal element. That is, according to a CoFe alloy of the present invention, both the corrosion resistance and the saturation magnetic flux density Bs can be improved, and specifically, the above-mentioned saturation magnetic flux density Bs can be increased to 2.35 T or more.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: October 30, 2007
    Assignee: Alps Electric Co., Ltd.
    Inventors: Mitsuo Kawasaki, Hisayuki Yazawa, Yoshihiro Kanada
  • Patent number: 7285338
    Abstract: An anisotropic thin-film rare-earth permanent magnet endowed with high magnetic characteristics by rendering a vapor-phase-grown thin film anisotropic in the layering direction. The atomic laminate units are formed by laminating a monoatomic layer of a rare earth element on a substrate of a non-magnetic material having, a flat smoothness and then by laminating an atomic laminate of a transition metal element having a plurality of monoatomic layers of a transition metal element, so that the atomic laminate units of a characteristic construction are laminated in a plurality of layers. As a result, each atomic laminate of the transition metal element has an easy magnetizable axis in the laminate direction of the monoatomic layers and which are sandwiched between a monoatomic layer of a rare-earth element so that an inverse magnetic domain is suppressed to establish a strong coercive force.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: October 23, 2007
    Assignee: Neomax Co., Ltd.
    Inventors: Osamu Yamashita, Ken Makita
  • Patent number: 7226666
    Abstract: An improved magnetoelectric composite which incorporates LaSrMn or LaCaMn oxides as a magnetostrictive composition are described. The magnetostrictive composition preferably has the formula La0.7Sr0.3MnO3 or La0.7Ca0.3MnO3. The composites preferably have a magnetostrictive layer joined to a piezoelectric layer. The composites are useful for sensors, read-heads, storage media and high frequency transducer devices.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: June 5, 2007
    Assignee: Oakland University
    Inventor: Gopalan Srinivasan
  • Patent number: 7172642
    Abstract: Magnetic metal particles containing iron as a main component, comprising cobalt in an amount of usually 20 to 50 atm %, calculated as Co, based on whole Fe, aluminum in an amount of usually 3 to 15 atm %, calculated as Al, based on whole Fe and a rare earth element in an amount of usually 3 to 20 atm %, calculated as rare earth element, based on whole Fe, and having an average major axis diameter of usually 0.02 to 0.065 ?m, preferably from 0.02 to less than 0.05 ?m, a coercive force of usually 159.2 to 222.9 kA/m (2,000 to 2,800 Oe), a soluble Na content of usually not more than 30 ppm, a soluble Ca content of usually not more than 100 ppm, and an oxidation stability ??s of usually not more than 10%.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: February 6, 2007
    Assignee: Toda Kogyo Corporation
    Inventors: Akinori Yamamoto, Yasutaka Ota, Haruki Kurokawa, Masaaki Maekawa
  • Patent number: 6986953
    Abstract: The present invention pertains to a magnetic laminate that may be used in the creation of an advertising, novelty or remembrance item. The laminated construction provides for containment of the coercive rings so as to substantially eliminate the migration of forces between successive sheets in a stack. The sheets may have one or more removable elements that release cleanly from the configuration through the use of a curable, frangible coating that creates a frangible bond and that does not impede the processing or handling of the sheets.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: January 17, 2006
    Assignee: Ward/Kraft, Inc.
    Inventor: Jesse D. Crum