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:
Sep. 06, 2011
Filed:
Jun. 06, 2008
Migaku Takahashi, Sendai, JP;
Shin Saito, Sendai, JP;
Tomoyuki Maeda, Kawasaki, JP;
Akihiko Takeo, Kawasaki, JP;
Yuzo Sasaki, Ichihara, JP;
Ryuji Sakaguchi, Ichihara, JP;
Migaku Takahashi, Sendai, JP;
Shin Saito, Sendai, JP;
Tomoyuki Maeda, Kawasaki, JP;
Akihiko Takeo, Kawasaki, JP;
Yuzo Sasaki, Ichihara, JP;
Ryuji Sakaguchi, Ichihara, JP;
Abstract
A magnetic recording medium is provided, which has at least one soft magnetic layer, at least one seed layer, at least one underlayer and at least one perpendicular magnetic recording layer, and is characterized in that the or each seed layer is comprised of a covalently bonded material. The covalently bonded material preferably predominantly comprises a nitride having a hexagonal crystal structure, more preferably, predominantly comprises aluminum nitride having a hexagonal wurtzite crystal structure. This magnetic recording medium is superior in recording and reproducing an information with high density.