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:
Jun. 12, 2007
Filed:
Feb. 05, 2004
Akira Morinaga, Odawara, JP;
Koichi Nishioka, Hiratsuka, JP;
Takayoshi Ohtsu, Oi-machi, JP;
Norifumi Miyamoto, Chigasaki, JP;
Shuichi Kojima, Hiratsuka, JP;
Akira Morinaga, Odawara, JP;
Koichi Nishioka, Hiratsuka, JP;
Takayoshi Ohtsu, Oi-machi, JP;
Norifumi Miyamoto, Chigasaki, JP;
Shuichi Kojima, Hiratsuka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magneto-resistive effect head including: an antiferromagnetic layer; a pinned layer which is formed on the antiferromagnetic layer and whose magnetizing direction has been fixed; a spacer formed on the pinned layer; a free layer formed on the spacer; and magnetic domain control layers having antiferromagnetic flims and magnet layers for performing a magnetic domain control of the free layer; wherein the each of the antiferromagnetjc films is formed on the free layer; wherein the each of magnet layers has at least two magnetic films coupled anti-ferromagnetically through at least one nonmagnetic film; a pair of lead layers for supplying a current to the stack of layers; and wherein seed layers are formed between the antiferromagnetic films and the lead layers.