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US 7,609,489 B2Granted
Magnetic sensor using NiFe alloy for pinned layer
AssigneeTDK Corporation
InventorsYosuke Ide, Masamichi Saito, Masahiko Ishizone, Naoya Hasegawa
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Abstract
A magnetic sensor comprising: a multilayer film which has a pinned magnetic layer, the magnetization thereof being pinned in one direction, and a free magnetic layer formed on the pinned magnetic layer with a nonmagnetic material layer provided therebetween, in which current is allowed to flow in a direction perpendicular to the surfaces of the layers forming the multilayer film, wherein the pinned magnetic layer has a NiaFeb alloy layer (where a and b each indicate atomic percent, and 0<a≦25 and a+b=100 are satisfied).
Claims14
A magnetic sensor comprising:
- a multilayer film which has a pinned magnetic layer, the magnetization thereof being pinned in one direction, and a free magnetic layer formed on the pinned magnetic layer with a nonmagnetic material layer provided therebetween, in which current is allowed to flow in a direction perpendicular to the surfaces of the layers forming the multilayer film,
- wherein the pinned magnetic layer has a NiaFeb alloy layer (where a and b each indicate atomic percent, and 0<a≦25 and a+b=100 are satisfied).
Dependencies are inferred from the claim text.