Patents by Inventor Stuart Stephen Parkin

Stuart Stephen Parkin 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).

  • Magnetic tunnel junctions including crystalline and amorphous tunnel barrier materials
    Publication number: 20060221510
    Abstract: Magnetic tunnel junctions are disclosed that include ferromagnetic (or ferrimagnetic) materials and a bilayer tunnel barrier structure. The bilayer includes a crystalline material, such as MgO or Mg—ZnO, and Al2O3, which may be amorphous. If MgO is used, then it is preferably (100) oriented. The magnetic tunnel junctions so formed enjoy high tunneling magnetoresistance, e.g., greater than 100% at room temperature.
    Type: Application
    Filed: April 4, 2005
    Publication date: October 5, 2006
    Inventor: Stuart Stephen Parkin
  • Spin-current switched magnetic memory element suitable for circuit integration and method of fabricating the memory element
    Publication number: 20050104101
    Abstract: A magnetic memory element switchable by current injection includes a plurality of magnetic layers, at least one of the plurality of magnetic layers having a perpendicular magnetic anisotropy component and including a current-switchable magnetic moment, and at least one barrier layer formed adjacent to the plurality of magnetic layers (e.g., between two of the magnetic layers). The memory element has the switching threshold current and device impedance suitable for integration with complementary metal oxide semiconductor (CMOS) integrated circuits.
    Type: Application
    Filed: November 19, 2003
    Publication date: May 19, 2005
    Applicant: International Business Machines Corporation
    Inventors: Jonathan Sun, Rolf Allenspach, Stuart Stephen Parkin, John Slonczewski, Bruce Terris