Patents by Inventor Tatsuma Shibata

Tatsuma Shibata 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).

  • Magnetoresistive film having non-magnetic spacer layer of reduced thickness
    Publication number: 20020081457
    Abstract: A first pinned ferromagnetic layer, an antiferromagnetic bonding layer and a second pinned ferromagnetic layer are sequentially formed over an antiferromagnetic layer. A layered ferrimagnetic structure is established. A compound or oxide layer is interposed between the antiferromagnetic bonding layer and the second pinned ferromagnetic layer. The compound layer serves to efficiently prevent transmission of an undulation or interfacial roughness. Undulation or interfacial roughness can be suppressed at the interface or boundary of a non-magnetic spacer layer formed on the second pinned ferromagnetic layer. The magnetic interaction can thus be suppressed between the second pinned ferromagnetic layer and a free ferromagnetic layer on the non-magnetic spacer layer, irrespective of a smaller thickness of the non-magnetic spacer layer.
    Type: Application
    Filed: March 21, 2001
    Publication date: June 27, 2002
    Applicant: FUJITSU LIMITED
    Inventors: Yutaka Shimizu, Tatsuma Shibata