Title:
OXIDE MAGNETIC MATERIAL EXHIBITING LOW MAGNETIC LOSS
Document Type and Number:
WIPO Patent Application WO/2002/054419
Kind Code:
A1
Abstract:
A Ni based ferrite material exhibiting a low magnetic loss, which comprises a ferrite material having a composition: Fe¿2?O¿3?: 40 to 50 mol %, ZnO: 20 to 33 mol %, CuO: 2 to 10 mol %, and balance: NiO, and 0.1 to 1 mol % of MnO¿2? added to the ferrite material. The Ni based ferrite material exhibits a lower magnetic loss as compared to that of a conventional Ni based ferrite material and thus is suitable for use as a core material, and further it can be wined directly around a core due to its high electric resistance and thus can be used for achieving miniturization of coil parts.
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Inventors:
INAGAKI MASAYUKI (JP)
MATSUO YOSHIO (JP)
TOMOZAWA TOSHIAKI (JP)
MATSUO YOSHIO (JP)
TOMOZAWA TOSHIAKI (JP)
Application Number:
PCT/JP2001/009716
Publication Date:
July 11, 2002
Filing Date:
November 07, 2001
Export Citation:
Assignee:
FDK CORP (JP)
INAGAKI MASAYUKI (JP)
MATSUO YOSHIO (JP)
TOMOZAWA TOSHIAKI (JP)
INAGAKI MASAYUKI (JP)
MATSUO YOSHIO (JP)
TOMOZAWA TOSHIAKI (JP)
International Classes:
C04B35/26; C04B35/30; C01G49/00; H01F1/147; H01F1/22; H01F1/34; H01F41/02; H01F41/04; (IPC1-7): H01F1/34; C04B35/30
Foreign References:
| JPH08250318A | 1996-09-27 | |||
| JP2000299215A | 2000-10-24 | |||
| JPS649863A | 1989-01-13 | |||
| JPH01212234A | 1989-08-25 | |||
| JPH09270314A | 1997-10-14 | |||
| JPH10279312A | 1998-10-20 | |||
| JPH08268719A | 1996-10-15 | |||
| JP2000277319A | 2000-10-06 |
Attorney, Agent or Firm:
Omata, Yukio (Nakagin-Shiroyama Bldg. 16-1, Ginza 8-chome Chuo-ku Tokyo, JP)
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