Patents by Inventor Shan-Dong Li

Shan-Dong Li 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: 20080296148
    Abstract: The present invention discloses a method for fabricating concentration-gradient high-frequency ferromagnetic film, wherein the primary material target is arranged exactly below the sputter-coated substrate to achieve the on-substrate concentration uniformity of the components coming from the primary material target; at least one doping target is arranged at a position deviating from the center of the substrate to create a doping concentration gradient on the substrate along a direction, and a stress gradient is thus created on the substrate along the direction of concentration variation. Thus, the as-deposited ferromagnetic material fabricated at ambient temperature can possess the uniaxial anisotropy that a high-frequency ferromagnetic material needs.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 4, 2008
    Inventors: Shan-Dong Li, Jenq-Gong Duh, Yung-Wang Peng, Cheng-Lun Kuo