Adjacent Magnetic Layers Patents (Class 428/820.2)
Having in-plane orientated magnetization (Class 428/820.3)
Magnetic layer composition specified (Class 428/820.4)
Specified performance related property (e.g., kerr rotation, etc.) (Class 428/820.5)
  • Bit patterned magnetic media
    Patent number: 8771848
    Abstract: A bit patterned magnetic recording medium, comprises a non-magnetic substrate having a surface; a plurality of spaced apart magnetic elements on the surface, each of the elements constituting a discrete magnetic domain or bit; and a layer of a ferromagnetic material for regulating magnetic exchange coupling between said magnetic elements. The layer has a saturation magnetization Ms ranging from about 1 to about 2,000 emu/cm3, preferably below about 400 emu/cm3, more preferably below about 200 emu/cm3, and may overlie, underlie, or at least partially fill spaces between adjacent magnetic elements.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: July 8, 2014
    Assignee: Seagate Technology LLC
    Inventors: Erol Girt, Hans J. Richter, Alexander Y. Dobin
  • Magneto-optical recording medium, method of manufacturing magneto-optical recording medium, method of recording on magneto-optical recording medium, and method of reproduction from magneto-optical recording medium
    Patent number: 7235313
    Abstract: A magneto-optical medium has a recording layer having a plurality of columns extending in a lamination direction, and a reproduction layer which is placed below the recording layer and which functions as a nucleus for the columns.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: June 26, 2007
    Assignee: Matsushita Electic Industrial Co., Ltd.
    Inventors: Motoyoshi Murakami, Masahiro Birukawa