Tunnel valve read sensor with crystalline alumina tunnel barrier deposited using room temperature techniques

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United States of America Patent

PATENT NO 9747930
SERIAL NO

14961781

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Abstract

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In one general embodiment, an apparatus includes a magnetic tunnel junction device having a reference layer, a free layer, and a tunnel barrier layer between the free and reference layers. The tunnel barrier layer is primarily crystalline alumina. In another general embodiment, a method includes forming a first magnetic layer, forming a tunnel barrier layer above the first magnetic layer, and forming a second magnetic layer above the tunnel barrier layer. The tunnel barrier layer includes crystalline alumina. The tunnel barrier layer is formed at a temperature of less than 100 degrees centigrade.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biskeborn, Robert G Hollister, US 360 3613
Lo, Calvin S Saratoga, US 169 1647
Topuria, Teya San Jose, US 14 126

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