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:
Jan. 19, 1982
Filed:
May. 28, 1980
Satoru Uedaira, Tokyo, JP;
Shigeyasu Ito, Tokyo, JP;
Koichi Aso, Tokyo, JP;
Masatoshi Hayakawa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A method of manufacturing an high permeability amorphous magnetic alloy is disclosed. In the method, an amorphous alloy ribbon is annealed at an elevated temperature T(.degree.K.) satisfying the relation 0.95.times.Tc (.degree.K.).ltoreq.T(.degree.K.)<Tcry(.degree.K.) where Tc is a magnetic Curie temperature and Tcry is a crystallization temperature of the alloy. Then the ribbon is quenched to a room temperature from the elevated temperature. The quenched amorphous alloy ribbon is again annealed at a temperature between 100.degree. C. and 250.degree. C. By the method, the amorphous magnetic alloy shows a high permeability over a wide frequency range and flat frequency response characteristics of permeability over a wide frequency range.