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FERROMAGNETIC TUNNEL JUNCTION ELEMENT AND METHOD OF DRIVING FERROMAGNETIC TUNNEL JUNCTION ELEMENT

  • US 20110163400A1
  • Filed: 08/28/2008
  • Published: 07/07/2011
  • Est. Priority Date: 03/06/2008
  • Status: Abandoned Application
First Claim
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1. A ferromagnetic tunnel junction element, comprising a ferromagnetic free layer, an insulating layer, and a ferromagnetic fixed layer which together with the ferromagnetic free layer sandwiches the insulating layer, whereinthe ferromagnetic free layer comprises a first ferromagnetic layer in contact with the insulating layer, a nonmagnetic metal layer, and a second ferromagnetic layer which together with the first ferromagnetic later sandwiches the nonmagnetic metal layer and which has a saturation magnetization smaller than the saturation magnetization of the first ferromagnetic layer,the film thickness of the nonmagnetic metal layer is set to a film thickness at which the magnetic coupling between the first ferromagnetic layer and the second ferromagnetic layer is ferromagnetic coupling, andthe magnetization direction of the first ferromagnetic layer is determined according to the magnetization direction of the second ferromagnetic layer.

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