Patents by Inventor Katayun Barmak Vaziri

Katayun Barmak Vaziri 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).

  • Publication number: 20170250024
    Abstract: The invention provides high coercivity magnetic materials based on FeNi alloys having an L10 phase structure, and methods for making the materials.
    Type: Application
    Filed: September 2, 2015
    Publication date: August 31, 2017
    Inventors: Laura H. LEWIS, Katayun BARMAK VAZIRI
  • Patent number: 9117821
    Abstract: Interconnects for semiconductors formed of materials that exhibit crystallographic anisotropy of the resistivity size effect such that line resistivity in one crystallographic orientation becomes lower than the resistivity in the other directions and methods of fabrication and use thereof are described. A wire having a dimension that results in an increase in the electrical resistivity of the wire can be formed of a material with a conductive anisotropy due to crystallographic orientation relative to the direction of current flow that minimizes the increase in the electrical resistivity as compared to the other orientations at that dimension.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 25, 2015
    Assignee: Carnegie Mellon University
    Inventors: Katayun Barmak Vaziri, Kevin Coffey, Dooho Choi
  • Patent number: 9076476
    Abstract: Iron-platinum (FePt) based magnetic recording media structures that provide small grain size and isolated-grain configurations suitable for high-density magnetic recording. In one of the structures, the recording media structure includes a thin film containing grains of L10 FePt and boron as a segregant contained in intergranular regions located among the FePt grains. In another structure, the recording media structure includes a thin film containing grains of L10 FePt, wherein the film is formed on an underlayer containing at least one material selected to control the size of the FePt grains in the film. Proper choices of materials, relative amounts of the materials, processing parameters, and other variables permit these structures to be formed with grain sizes, magnetization orientations, and perpendicular coercivities that allow designers to create magnetic storage devices having storage densities of 1 Tbit/in2 and greater.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: July 7, 2015
    Assignee: Carnegie Mellon University
    Inventors: Mark Kryder, Steven D. Granz, Katayun Barmak Vaziri
  • Publication number: 20140264887
    Abstract: Interconnects for semiconductors formed of materials that exhibit crystallographic anisotropy of the resistivity size effect such that line resistivity in one crystallographic orientation becomes lower than the resistivity in the other directions and methods of fabrication and use thereof are described. A wire having a dimension that results in an increase in the electrical resistivity of the wire can be formed of a material with a conductive anisotropy due to crystallographic orientation relative to the direction of current flow that minimizes the increase in the electrical resistivity as compared to the other orientations at that dimension.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Inventors: KATAYUN BARMAK VAZIRI, KEVIN COFFEY, DOOHO CHOI
  • Publication number: 20140233363
    Abstract: Iron-platinum (FePt) based magnetic recording media structures that provide small grain size and isolated-grain configurations suitable for high-density magnetic recording. In one of the structures, the recording media structure includes a thin film containing grains of L10 FePt and boron as a segregant contained in intergranular regions located among the FePt grains. In another structure, the recording media structure includes a thin film containing grains of L10 FePt, wherein the film is formed on an underlayer containing at least one material selected to control the size of the FePt grains in the film. Proper choices of materials, relative amounts of the materials, processing parameters, and other variables permit these structures to be formed with grain sizes, magnetization orientations, and perpendicular coercivities that allow designers to create magnetic storage devices having storage densities of 1 Tbit/in2 and greater.
    Type: Application
    Filed: September 21, 2012
    Publication date: August 21, 2014
    Inventors: Mark Kryder, Steven D. Granz, Katayun Barmak Vaziri