Title:
磁気抵抗効果素子およびその製造方法、ならびに磁気抵抗効果装置、薄膜磁気ヘッド、ヘッドジンバルアセンブリ、ヘッドアームアセンブリおよび磁気ディスク装置
Document Type and Number:
Japanese Patent JP4134080
Kind Code:
B2
Abstract:
A free layer of an MR element incorporates a first layer, a second layer, a third layer, a fourth layer, a fifth layer and a sixth layer that are stacked in this order on a nonmagnetic conductive layer. The absolute value of magnetostriction constant of the free layer is 1×10−6 or smaller. The coercivity of the free layer is 20×79.6 A/m or smaller. The first layer is made of an alloy containing ‘a’ atomic percent cobalt and (100−a) atomic percent iron wherein ‘a’ falls within a range of 20 to 50 inclusive. The second layer is made of an alloy containing ‘b’ atomic percent cobalt and (100−b) atomic percent iron wherein ‘b’ falls within a range of 70 to 90 inclusive. In addition, oxidation treatment is given to a surface of the second layer farther from the first layer.
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Inventors:
Mizuno friend
Miyauchi Daisuke
Miyauchi Daisuke
Application Number:
JP2005106999A
Publication Date:
August 13, 2008
Filing Date:
April 04, 2005
Export Citation:
Assignee:
tdk Corporation
International Classes:
G11B5/39; H01L43/08; H01L43/12
Domestic Patent References:
| JP2003318462A | ||||
| JP2004179668A | ||||
| JP2003060261A | ||||
| JP2003008102A |
Attorney, Agent or Firm:
Katsumi Hoshimiya