Magnetoresistance effect element
First Claim
1. A magnetoresistance effect element having a multilayer structure of the following layers:
- [(a layer of an alloy comprising Ni and Fe)/(a layer of Cu or its alloy)/(a layer of Co or its alloy)/(Cu or its alloy)]n wherein n is the number of the above multilayer structure and is an integer from 3 to 15, and a thickness of the layer of Cu or its alloy is from 30 to 55 Å
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Abstract
A magnetoresistance effect element including a substrate and at least two magnetic thin layers which are laminated with interposing a non-magnetic thin layer therebetween on said substrate, wherein adjacent magnetic thin layers through the non-magnetic thin layer have different coercive forces and each of the magnetic thin layers and the non-magnetic layer has a thickness of not larger than 200 Å, which has a large magnetoresistance ratio of several % to several ten % at a small external magnetic field of several Oe to several ten Oe and can provide a MR sensor having a high sensitivity and a MR head which achieves high density magnetic recording.
32 Citations
11 Claims
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1. A magnetoresistance effect element having a multilayer structure of the following layers:
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[(a layer of an alloy comprising Ni and Fe)/(a layer of Cu or its alloy)/ (a layer of Co or its alloy)/(Cu or its alloy)]n wherein n is the number of the above multilayer structure and is an integer from 3 to 15, and a thickness of the layer of Cu or its alloy is from 30 to 55 Å
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification