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. 05, 2017
Filed:
May. 16, 2016
International Business Machines Corporation, Armonk, NY (US);
Robert G. Biskeborn, Hollister, CA (US);
Calvin S. Lo, Saratoga, CA (US);
Teya Topuria, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In one general embodiment, an apparatus includes a magnetic transducer having a CoFe layer and an at least partially polycrystalline alumina-containing coating on a media facing side of the CoFe layer. A graded layer comprising Co, Fe, Al and oxygen is positioned between the alumina-containing coating and the CoFe layer, wherein a ratio of Co to Al in the graded layer decreases from the CoFe layer toward the alumina-containing coating. In another general embodiment, an apparatus includes a magnetic transducer having a CoFe layer and an at least partially polycrystalline alumina-containing coating on a media facing side of the CoFe layer. CoFe-oxide crystallites are present at an interface region of the CoFe layer and the alumina-containing coating and the CoFe layer. Fabrication methods are also presented.