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Ferromagnetic tunnel junction device and method of forming the same

  • US 6,392,281 B1
  • Filed: 03/28/2000
  • Issued: 05/21/2002
  • Est. Priority Date: 08/04/1997
  • Status: Expired due to Term
First Claim
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1. An intermediate layer sandwiched between first and second ferromagnetic layers, said intermediate layer having at least a single oxide layered region forming at least a single tunnel barrier, said at least single oxide layered region which has at least a first abrupt interface with said first ferromagnetic layer and a second abrupt interface with said second ferromagnetic layer,wherein each of said first and second interfaces has such an extremely high abruptness as a monoatomic layer level that a width of a boundary area between an oxygen atom containing region and an oxygen atom free region is substantially the same as a boundary between adjacent two monoatomic layers.

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