The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2008
Filed:
Mar. 14, 2005
Igor Shvets, Dublin, IE;
Sunil Kumar Arora, Dublin, IE;
Sumesh Sofin Ramakrishna Pilli, Dublin, IE;
Abstract
A magnetoresistive medium () includes a substrate () which has been treated to provide a miscut vicinal surface () in the form of terraces () and steps () of atomic and nanometer scale. There are discrete separated spacer nanowires () provided by an intermediate partial spacer film on each terrace () against each step (). A further main film () provides main nanowires ((),()). A thin protective layer () covers the main nanowires ((),()) which form two separate subsets of main nanowires with different exchange interaction with the substrate and thus a different response to an external magnetic field. In use, when an external magnetic field (H) is applied the response of the main nanowires ((),()) changes as the exchange coupling with the substrate () varies and the magnetisation on the main nanowires ((),()) change. This is shown by the arrows while prior to the application of the external magnetic field, they might, for example, be aligned. Many different constructions of magnetoresistive media are described.