Patents by Inventor Ralf Röhlsberger

Ralf Röhlsberger 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: 11193201
    Abstract: An apparatus with a deposition source and a substrate holder having a source mounting portion, which is rotatable about a first axis, a shielding element, which is disposed between the deposition source and the substrate holder, and a drive arrangement. The deposition source has a material outlet opening from which material is emitted. A longitudinal axis of an elongate central region of the material outlet opening extends parallel and centrally between the edges of the material outlet opening. The deposition source is mounted to the source mounting portion such that the longitudinal axis of the central region is parallel to the first axis. The shielding element has an aperture. The drive arrangement controls rotation of the source mounting portion, adjustment of a width of the aperture, and relative movement between the substrate holder and both the source mounting portion and the shielding element.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: December 7, 2021
    Assignee: Deutsches Elektronen-Synchrotron DESY
    Inventors: Kai Schlage, Andrey Siemens, Svenja Willing, Christian Adolff, Tatiana Gurieva, Lars Bocklage, Ralf Röhlsberger
  • Patent number: 11170805
    Abstract: A method of producing a multilayer magnetoelectronic device and a related device. The method includes depositing a multilayer structure including at least two ferromagnetic layers disposed one on top of the other and each having a magnetic anisotropy with a corresponding magnetic moment. A magnetization curve is specified for the magnetoelectronic device. The number of ferromagnetic layers and, for each of the ferromagnetic layers, the magnetic moment and the magnetic hardness for obtaining the specified magnetization curve are determined. For each of the ferromagnetic layers a magnetic material, a thickness, an azimuthal angle and an angle of incidence are determined for obtaining the determined magnetic moment and magnetic hardness of the respective ferromagnetic layer. The multilayer structure is deposited using the determined material, thickness, azimuthal angle and angle of incidence for each of the ferromagnetic layers.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: November 9, 2021
    Assignee: Deutsches Elektronen-Synchrotron DESY
    Inventors: Kai Schlage, Denise Erb, Ralf Röhlsberger, Hans-Christian Wille, Daniel Schumacher, Lars Bocklage
  • Patent number: 10998131
    Abstract: A method of producing a multilayer device, such as a multilayer magnetoelectronic device, and a device with an improved magnetic pinning. The device includes a multilayer structure including an antiferromagnetic pinning layer and one or more ferromagnetic layers. Each of the ferromagnetic layers has a boundary surface with the antiferromagnetic layer. The antiferromagnetic layer is deposited at a nonzero angle of incidence with respect to a direction perpendicular to the plane of extension of the antiferromagnetic pinning layer. This oblique incidence deposition gives rise to a surface roughness of the antiferromagnetic pinning layer which is described by a plane wave function.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: May 4, 2021
    Assignee: Deutsches Elektronen-Synchrotron DESY
    Inventors: Kai Schlage, Tatiana Gurieva, Svenja Willing, Lars Bocklage, Ralf Röhlsberger
  • Publication number: 20190392990
    Abstract: A method of producing a multilayer device, such as a multilayer magnetoelectronic device, and a device with an improved magnetic pinning. The device includes a multilayer structure including an antiferromagnetic pinning layer and one or more ferromagnetic layers. Each of the ferromagnetic layers has a boundary surface with the antiferromagnetic layer. The antiferromagnetic layer is deposited at a nonzero angle of incidence with respect to a direction perpendicular to the plane of extension of the antiferromagnetic pinning layer. This oblique incidence deposition gives rise to a surface roughness of the antiferromagnetic pinning layer which is described by a plane wave function.
    Type: Application
    Filed: June 24, 2019
    Publication date: December 26, 2019
    Inventors: Kai SCHLAGE, Tatiana GURIEVA, Svenja WILLING, Lars BOCKLAGE, Ralf RÖHLSBERGER
  • Publication number: 20190390327
    Abstract: An apparatus with a deposition source and a substrate holder having a source mounting portion, which is rotatable about a first axis, a shielding element, which is disposed between the deposition source and the substrate holder, and a drive arrangement. The deposition source has a material outlet opening from which material is emitted. A longitudinal axis of an elongate central region of the material outlet opening extends parallel and centrally between the edges of the material outlet opening. The deposition source is mounted to the source mounting portion such that the longitudinal axis of the central region is parallel to the first axis. The shielding element has an aperture. The drive arrangement controls rotation of the source mounting portion, adjustment of a width of the aperture, and relative movement between the substrate holder and both the source mounting portion and the shielding element.
    Type: Application
    Filed: June 24, 2019
    Publication date: December 26, 2019
    Inventors: Kai SCHLAGE, Andrey SIEMENS, Svenja WILLING, Christian ADOLFF, Tatiana GURIEVA, Lars BOCKLAGE, Ralf RÖHLSBERGER
  • Publication number: 20180174604
    Abstract: A method of producing a multilayer magnetoelectronic device and a related device. The method includes depositing a multilayer structure including at least two ferromagnetic layers disposed one on top of the other and each having a magnetic anisotropy with a corresponding magnetic moment. A magnetization curve is specified for the magnetoelectronic device. The number of ferromagnetic layers and, for each of the ferromagnetic layers, the magnetic moment and the magnetic hardness for obtaining the specified magnetization curve are determined. For each of the ferromagnetic layers a magnetic material, a thickness, an azimuthal angle and an angle of incidence are determined for obtaining the determined magnetic moment and magnetic hardness of the respective ferromagnetic layer. The multilayer structure is deposited using the determined material, thickness, azimuthal angle and angle of incidence for each of the ferromagnetic layers.
    Type: Application
    Filed: February 13, 2018
    Publication date: June 21, 2018
    Inventors: Kai Schlage, Denise Erb, Ralf Röhlsberger, Hans-Christian Wille, Daniel Schumacher, Lars Bocklage
  • Patent number: 9928860
    Abstract: A method of producing a multilayer magnetoelectronic device and a related device. The method includes depositing a multilayer structure including at least two ferromagnetic layers disposed one on top of the other and each having a magnetic anisotropy with a corresponding magnetic moment. A magnetization curve is specified for the magnetoelectronic device. The number of ferromagnetic layers and, for each of the ferromagnetic layers, the magnetic moment and the magnetic hardness for obtaining the specified magnetization curve are determined. For each of the ferromagnetic layers a magnetic material, a thickness, an azimuthal angle and an angle of incidence are determined for obtaining the determined magnetic moment and magnetic hardness of the respective ferromagnetic layer. The multilayer structure is deposited using the determined material, thickness, azimuthal angle and angle of incidence for each of the ferromagnetic layers.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: March 27, 2018
    Assignee: Deutsches Elektronen-Synchrotron DESY
    Inventors: Kai Schlage, Denise Erb, Ralf Röhlsberger, Hans-Christian Wille, Daniel Schumacher, Lars Bocklage
  • Publication number: 20150064499
    Abstract: A method of producing a multilayer magnetoelectronic device and a related device. The method includes depositing a multilayer structure including at least two ferromagnetic layers disposed one on top of the other and each having a magnetic anisotropy with a corresponding magnetic moment. A magnetization curve is specified for the magnetoelectronic device. The number of ferromagnetic layers and, for each of the ferromagnetic layers, the magnetic moment and the magnetic hardness for obtaining the specified magnetization curve are determined. For each of the ferromagnetic layers a magnetic material, a thickness, an azimuthal angle and an angle of incidence are determined for obtaining the determined magnetic moment and magnetic hardness of the respective ferromagnetic layer. The multilayer structure is deposited using the determined material, thickness, azimuthal angle and angle of incidence for each of the ferromagnetic layers.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventors: Kai Schlage, Denise Erb, Ralf Röhlsberger, Hans-Christian Wille, Daniel Schumacher, Lars Bocklage