Patents by Inventor Stéphane Auffret

Stéphane Auffret has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10658574
    Abstract: A synthetic antiferromagnetic layer includes a first ferromagnetic layer containing an amorphizing element, the first ferromagnetic layer having a first structural symmetry; a second ferromagnetic layer having a second structural symmetry; wherein the first and the second ferromagnetic layers are antiferromagnetically coupled by a trifunctional non-magnetic multi-layered structure, the antiferromagnetic coupling being an Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling, the non-magnetic multi-layered structure including at least two non-magnetic layers, the non-magnetic multilayered structure being at least partially nano-crystalline or amorphous in order to ensure a structural transition between the first ferromagnetic layer having the first structural symmetry and the second ferromagnetic layer having the second structural symmetry, the non-magnetic multilayered structure being adapted to absorb at least part of the amorphizing element out of the first ferromagnetic layer in contact with the non-magnetic multi
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 19, 2020
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE GRENOBLE ALPES
    Inventors: Jyotirmoy Chatterjee, Bernard Dieny, Ricardo Sousa, Stéphane Auffret
  • Publication number: 20190051822
    Abstract: A synthetic antiferromagnetic layer includes a first ferromagnetic layer containing an amorphizing element, the first ferromagnetic layer having a first structural symmetry; a second ferromagnetic layer having a second structural symmetry; wherein the first and the second ferromagnetic layers are antiferromagnetically coupled by a trifunctional non-magnetic multi-layered structure, the antiferromagnetic coupling being an RKKY coupling, the non-magnetic multi-layered structure including at least two non-magnetic layers, the non-magnetic multilayered structure being at least partially nano-crystalline or amorphous in order to ensure a structural transition between the first ferromagnetic layer having the first structural symmetry and the second ferromagnetic layer having the second structural symmetry, the non-magnetic multilayered structure being adapted to absorb at least part of the amorphizing element out of the first ferromagnetic layer in contact with the non-magnetic multi-layered structure.
    Type: Application
    Filed: August 10, 2018
    Publication date: February 14, 2019
    Inventors: Joytirmoy CHATTERJEE, Bernard DIENY, Ricardo SOUSA, Stéphane AUFFRET
  • Patent number: 9828928
    Abstract: A method and a device for controlling an internal combustion engine, in particular of a motor vehicle, the internal combustion engine including components which are each operated in an operating mode established by an operating mode coordinator, and it being in particular provided that the operating mode coordinator carries out the aforementioned establishment of at least one operating mode based on further operating aspects of the components.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: November 28, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Stephane Auffret, Bettina Weber
  • Publication number: 20160230692
    Abstract: A method and a device for controlling an internal combustion engine, in particular of a motor vehicle, the internal combustion engine including components which are each operated in an operating mode established by an operating mode coordinator, and it being in particular provided that the operating mode coordinator carries out the aforementioned establishment of at least one operating mode based on further operating aspects of the components.
    Type: Application
    Filed: February 9, 2016
    Publication date: August 11, 2016
    Inventors: Stephane Auffret, Bettina Weber
  • Patent number: 8513944
    Abstract: A three-layer magnetic element comprises, on a substrate, a first oxide, hydride or nitride layer O having a metal magnetic layer M mounted thereon, the latter having either a second oxide, hydride or nitride layer O?, or a non-ferromagnetic metal layer M? mounted thereon. Layer M is continuous, has a thickness of 1 to 5 nm and the magnetization thereof is parallel to the layer plane in the absence of layers O and O?. There is, for a range of temperature equal to or greater than ambient temperature, interfacial magnetic anisotropy perpendicular to the layer plane on interfaces O/M and M/O? that is capable of decreasing the effective demagnetizing field of layer M or orienting the magnetization of layer M in a manner substantially perpendicular to the layer plane.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: August 20, 2013
    Assignees: Commissariat a l'Energie Atomique et aux Energie Alternatives, Centre National de la Recherche
    Inventors: Bernard Rodmacq, Stéphane Auffret, Bernard Dieny, Lavinia Elena Nistor
  • Patent number: 8247093
    Abstract: This magnetic multilayer device comprises, on a substrate, an alternating sequence of magnetic metallic layers M and oxide, hydride or nitride layers O. The number of layers M equals at least two. The layers M are continuous. There is interfacial magnetic anisotropy perpendicular to the plane of the layers at the level of the M/O interfaces.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: August 21, 2012
    Assignees: Commissariat a l'Energie Atomique, Centre National de la Recherche Scientifique
    Inventors: Bernard Rodmacq, Stéphane Auffret, Bernard Dieny, Jérôme Moritz
  • Publication number: 20110163743
    Abstract: This three-layer magnetic element comprises, on a substrate, a first oxide, hydride or nitride layer O having a metal magnetic layer M mounted thereon, the latter having either a second oxide, hydride or nitride layer O?, or a non-ferromagnetic metal layer M? mounted thereon. Layer M is continuous, has a thickness of 1 to 5 nm and the magnetisation thereof is parallel to the layer plane in the absence of layers O and O?. There is, for a range of temperature equal to or greater than ambient temperature, interfacial magnetic anisotropy perpendicular to the layer plane on interfaces O/M and M/O? that is capable of decreasing the effective demagnetising field of layer M or orienting the magnetisation of layer M in a manner substantially perpendicular to the layer plane.
    Type: Application
    Filed: October 13, 2010
    Publication date: July 7, 2011
    Applicants: Commissariat A L'Energie Atomique Et Aux Energie Alternatives, Centre National De La Recherche Scientifique
    Inventors: Bernard RODMACQ, Stéphane AUFFRET, Bernard DIENY, Lavinia Elena NISTOR
  • Publication number: 20080151615
    Abstract: This magnetic multilayer device comprises, on a substrate, an alternating sequence of magnetic metallic layers M and oxide, hydride or nitride layers O. The number of layers M equals at least two. The layers M are continuous. There is interfacial magnetic anisotropy perpendicular to the plane of the layers at the level of the M/O interfaces.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 26, 2008
    Applicant: Commissariat A L'Energie Atomique
    Inventors: Bernard Rodmacq, Stephane Auffret, Bernard Dieny, Jerome Moritz
  • Patent number: 6013365
    Abstract: This invention relates to a multilayered magnetic structure comprising an alternate stack of:layers (6, 16) of a first type based on magnetic materials,layers (12) of a second type, made of Ag or an Ag rich alloy,a thin interface layer (8, 14) of Co or a Co rich alloy being located at the interface between layers of the first type and layers of the second type.The invention also relates to a process for making this type of structure.Applications to sensors based on magnetoresistive effects, such as current sensors or magnetic heads.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: January 11, 2000
    Assignee: Commissariat A L'Atomique
    Inventors: Bernard Dieny, Stephane Auffret, Christophe Cowache, Franck Berthet