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:
May. 27, 2008
Filed:
May. 10, 2006
Shin Eguchi, Kawasaki, JP;
Chikayoshi Kamata, Kawasaki, JP;
Junya Ikeda, Kawasaki, JP;
Atsushi Tanaka, Kawasaki, JP;
Shin Eguchi, Kawasaki, JP;
Chikayoshi Kamata, Kawasaki, JP;
Junya Ikeda, Kawasaki, JP;
Atsushi Tanaka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A magnetoresistive film is formed on the surface of a lower electrode layer in a method of making a current-perpendicular-to-the-plane structure magnetoresistive element. The magnetoresistive film includes a lower portion and an upper portion overlaid on the lower portion. The lower portion includes at least a pinned magnetic layer. The upper portion includes at least a free magnetic layer. A pair of domain control magnetic layers is formed to sandwich the magnetoresistive film. An insulator film is formed to cover over the domain control magnetic layers. The upper portion is subjected to an etching process. The domain control magnetic layers are reliably prevented from being removed during the etching process. Accordingly, the domain control magnetic layers are allowed to reliably sandwich the upper portion of the magnetoresistive film in the aforementioned manner.