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. 19, 2006
Filed:
Mar. 09, 2004
Kazue Kudo, Odawara, JP;
Yasuyuki Okada, Odawara, JP;
Nobuo Yoshida, Odawara, JP;
Moriaki Fuyama, Hitachi, JP;
Noriyuki Saiki, Odawara, JP;
Gen Oikawa, Odawara, JP;
Takashi Kawabe, Hitachi, JP;
Makoto Morijiri, Ninomiya, JP;
Kazue Kudo, Odawara, JP;
Yasuyuki Okada, Odawara, JP;
Nobuo Yoshida, Odawara, JP;
Moriaki Fuyama, Hitachi, JP;
Noriyuki Saiki, Odawara, JP;
Gen Oikawa, Odawara, JP;
Takashi Kawabe, Hitachi, JP;
Makoto Morijiri, Ninomiya, JP;
Hitachi Global Storage Technologies Japan, Ltd., Kanagawa-ken, JP;
Abstract
A material for magnetic pole for attaining a writing head generating an intense recording magnetic field, and a structure and a manufacturing method therefor. The thin film magnetic head includes a magnetic pole layer having a plated magnetic layer containing Co, Ni and Fe formed on a plated underlayer of a sputtered magnetic layer containing Co, Ni and Fe. The CoNiFe magnetic layer having a composition: 40 wt %≦Co≦70 wt %, 10 wt %≦Ni≦25 wt % and 10 wt %≦Fe≦30 wt % and a peak intensity ratio in the X-ray diffraction of I(200)/I(111)≧0.5 and I(110)/I(111)≧1 (defining peak intensities for the face-centered cubic fcc (111) face, fcc (200) face and the body-centered cubic bcc (119) face as: I(111), I(200), I(110)).