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:
Aug. 02, 1983
Filed:
Dec. 31, 1980
Applicant:
Inventors:
Joseph A Aboaf, Peekskill, NY (US);
Erik Klokholm, Stamford, CT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
420440 ; 428606 ; 365171 ; 148 3155 ;
Abstract
A low or zero magnetostriction ferromagnetic alloy is used for a magnetic recording medium. The alloy is (Fe.sub.y Co.sub.1-y).sub.1-x Cr.sub.x where y (Fe) is preferably 15-23 atomic percent of the FeCo part of the alloy. The value of x (Cr) is 7-20 atomic percent of the alloy and the remainder 1-x (FeCo) is 83-92 atomic percent of the alloy. The maximum ranges of the composition of the alloy are about as follows: