Title:
MAGNETIC BODY THIN FILM AND MAGNETIC HEAD
Document Type and Number:
Japanese Patent JP3276109
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the magnetic body thin film which suppresses the growth of crystal particles and has superior soft magnetic characteristics even in a high-temperature heat treatment by giving a composition gradient in crystal particles in a main magnetic layer.
SOLUTION: A magnetic body thin film 1 is formed of crystal particles 4 of metal magnetic body alloy and the particles contain ≥1 kind of nonmagnetic element or an element having lower oxide production free energy or nitride production free energy than Fe so that the elements have a composition gradient to high density from in the particles to the surfaces. Main magnetic layer 2 and intermediate layers 3 whose saturated magnetic flux density is ≥0.1 tesla less than that of the main magnetic layers are stacked by turns.
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Inventors:
Masayoshi Hiramoto
Osamu Inoue
Kenji Iijima
Kouichi Kugimiya
Osamu Inoue
Kenji Iijima
Kouichi Kugimiya
Application Number:
JP2000017269A
Publication Date:
April 22, 2002
Filing Date:
May 15, 1995
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G11B5/31; H01F10/12; (IPC1-7): H01F10/12; G11B5/31
Domestic Patent References:
| JP2119106A | ||||
| JP3166704A | ||||
| JP5335146A |
Attorney, Agent or Firm:
Hiroyuki Ikeuchi (1 person outside)