Patent · US Expired

Stabilized recording media including coupled discontinuous and continuous magnetic layers

US6777112B1 · kind B1 · utility

33Cited by

15References

18Claims

0Family size

Assignee

Seagate Technology LLC · US

Inventors

Erol Girt · Berkeley, US
Hans J. Richter · Marktoberdorf, DE
Samuel D. Harkness, IV · Berkeley, US

Key dates

Filing date	Oct 9, 2001
Grant date	Aug 17, 2004
Priority date	—
Expiry date	Feb 23, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/265
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic recording medium having increased thermal stability and signal-to-medium noise ratio (SMNR), comprising a layer stack including, in sequence:(a) a continuous ferromagnetic layer;(b) a non-magnetic spacer layer; and(c) a discontinuous ferromagnetic layer;wherein the continuous ferromagnetic layer (a) and the discontinuous ferromagnetic layer (c) are ferromagnetically or anti-ferromagnetically coupled together across the non-magnetic spacer layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.