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:
Nov. 18, 1986
Filed:
Oct. 05, 1984
Katsuya Mitsuoka, Hitachi, JP;
Shinji Narishige, Mito, JP;
Akira Kumagai, Hitachi, JP;
Masaaki Sano, Hitachi, JP;
Shinichi Hara, Hitachi, JP;
Masanobu Hanazono, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic thin film of Ni-Co-Fe ternary alloy containing at most 75% by weight of Ni, 10 to 90% by weight of Co, and at most 15% by weight of Fe, which shows the magnetostriction constant between +2.times.10.sup.-6 to -2.times.10.sup.-6 and shows a uniaxial magnetic anisotropy of at most 10 Oe. The film is formed through the vacuum evaporation of the alloy during which two orthogonal external magnetic fields, directions x and y, are alternately applied over the deposition surface of a substrate. The film is suitable for a core material of a thin film magnetic head with a higher recording density.