Rare-earth Or Lanthanum Series Element Contained In Separate Lattice Phase (e.g., Scandium Or Yttrium In Separate Phase From Feconi, Etc.) Patents (Class 428/822.5)
  • Publication number: 20100246045
    Abstract: Disclosed is a magnetic recording medium comprising a substrate, a magnetic recording layer formed on the substrate to record magnetic information, and a piezoelectric material disposed adjacent to the magnetic recording layer and capable of contracting and expanding. Preferably, piezoelectric members made of the piezoelectric material are formed in such a manner as to be spaced a predetermined distance apart from each other on the substrate in a direction crossing a track on the magnetic recording layer, and the magnetic recording layer is formed between the piezoelectric members. When subjected to laser light or ultraviolet radiation, the piezoelectric material contracts or expands at least in the direction crossing the track. The piezoelectric material is selected from the group consisting of lead lanthanum zirconate titanate, barium titanate, and potassium niobate.
    Type: Application
    Filed: October 12, 2007
    Publication date: September 30, 2010
    Applicant: SHOWA DENKO K.K.
    Inventors: Hisato Shibata, Hideaki Takahoshi, Yuki Yoshida, Akira Kikuchi
  • Patent number: 7348647
    Abstract: A digital magnetic memory cell device for read and/or write operations, having a soft-magnetic read and/or write layer system and at least one hard-magnetic reference layer system, which is designed as an AAF system and includes at least one reference layer, wherein the reference layer system has a layer section comprising at least one bias layer system with at least one ferrimagnetic layer, the magnetic moments of the bias layer system and of the reference layer being coupled in opposite directions via a coupling layer.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 25, 2008
    Assignee: Infineon Technologies AG
    Inventors: Roland Mattheis, Hugo Van Den Berg