×

Perpendicular magnetic recording medium and magnetic memory apparatus

  • US 20070231609A1
  • Filed: 08/18/2006
  • Published: 10/04/2007
  • Est. Priority Date: 03/31/2006
  • Status: Abandoned Application
First Claim
Patent Images

1. A perpendicular magnetic recording medium comprising:

  • a substrate; and

    a recording layer formed on the substrate, the recording layer having a magnetic easy axis substantially perpendicular to the surface of the substrate and including three or more magnetic layers containing a Co alloy having a hcp structure;

    wherein two of the magnetic layers included in the recording layer form an anti-ferromagnetic exchange coupling structure;

    wherein the two magnetic layers are anti-ferromagnetically exchange coupled via a non-magnetic coupling layer situated therebetween;

    wherein the magnetizations of the two magnetic layers are anti-parallel to each other at a remanent magnetization state.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×