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:
Oct. 02, 2001
Filed:
May. 24, 1999
Syed A. Hossain, Fremont, CA (US);
Mark S. Miller, Danville, CA (US);
Devendra P. Rathi, San Jose, CA (US);
Read-Rite Corporation, Fremont, CA (US);
Abstract
Magnetically permeable, high magnetic saturation, primarily iron NiFe alloys are formed on thin seed layers by sputtering and electroplating. Pole layers a few microns in thickness can be formed of magnetically superlative, primarily iron NiFe alloys in this manner for transducers that may be used in information storage systems. The seed layers may include Ni,Fe,or Cr, and the magnetically superlative NiFe alloy may be Ni,Fe,. The magnetically superlative NiFe alloy has increased concentration of a body centered cubic crystalline phase and/or a decreased concentration of a face centered cubic crystalline phase compared with conventional Ni,Fe,. A laminated pole structure has a dielectric interlayer along with seed layers and magnetically superlative, primarily iron NiFe layers.