Title:
MAGNETIC MATERIAL
Document Type and Number:
WIPO Patent Application WO/2007/114455
Kind Code:
A1
Abstract:
This invention provides a magnetic material that has an X-ray diffraction peak corresponding to the crystal structure of ε-Fe2O3 and is formed of a crystal of ε-GaxFe2-xO3, provided by replacing a part of Ga3+ ion site in the ε-Fe2O3 crystal with Ga3+ ion, wherein 0 < X < 1. For the magnetic material, the coercive force lowers depending upon the content of Ga, and the maximum saturation magnetization level can be realized.
Inventors:
OHKOSHI SHIN-ICHI (JP)
HASHIMOTO KAZUHITO (JP)
SAKURAI SHUNSUKE (JP)
KUROKI SHIRO (JP)
SATO KIMITAKA (JP)
SASAKI SHINYA (JP)
HASHIMOTO KAZUHITO (JP)
SAKURAI SHUNSUKE (JP)
KUROKI SHIRO (JP)
SATO KIMITAKA (JP)
SASAKI SHINYA (JP)
Application Number:
PCT/JP2007/057509
Publication Date:
October 11, 2007
Filing Date:
March 28, 2007
Export Citation:
Assignee:
UNIV TOKYO (JP)
DOWA ELECTRONICS MATERIALS CO (JP)
OHKOSHI SHIN-ICHI (JP)
HASHIMOTO KAZUHITO (JP)
SAKURAI SHUNSUKE (JP)
KUROKI SHIRO (JP)
SATO KIMITAKA (JP)
SASAKI SHINYA (JP)
DOWA ELECTRONICS MATERIALS CO (JP)
OHKOSHI SHIN-ICHI (JP)
HASHIMOTO KAZUHITO (JP)
SAKURAI SHUNSUKE (JP)
KUROKI SHIRO (JP)
SATO KIMITAKA (JP)
SASAKI SHINYA (JP)
International Classes:
C01G49/00; C04B35/622; G11B5/706; H01F1/11; H01F10/22
Foreign References:
| JP2005156390A | 2005-06-16 |
Other References:
KUROKI S. ET AL.: "epsilon-Fe2O3 Nano Jiseitai ni Okeru Spin Saihairetsu Gensho Seigyo", DAI 29 KAI DIGESTS OF ANNUAL CONFERENCE ON MAGNETICS IN JAPAN, 19 September 2005 (2005-09-19), pages 371, XP003017172
JIAN JIN; SHINICHI OHKOSHI; KAZUHITO HASHIMOTO, ADVANCED MATERIALS, vol. 16, no. 1, 5 January 2004 (2004-01-05), pages 48 - 51
JIAN JIN; KAZUHITO HASHIMOTO; SHINICHI OHKOSHI, JOURNAL OF MATERIALS CHIMISTRY, vol. 15, 2005, pages 1067 - 1071
SHUNSUKE SAKURAI ET AL., JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, vol. 74, no. 7, July 2005 (2005-07-01), pages 1946 - 1949
"Summary of Preprints in the 29th Scientific Lecture by the Applied Magnetic Society of Japan", APPLIED MAGNETIC SOCIETY OF JAPAN, vol. 21, 19 September 2005 (2005-09-19), pages 17
See also references of EP 2003094A4
JIAN JIN; SHINICHI OHKOSHI; KAZUHITO HASHIMOTO, ADVANCED MATERIALS, vol. 16, no. 1, 5 January 2004 (2004-01-05), pages 48 - 51
JIAN JIN; KAZUHITO HASHIMOTO; SHINICHI OHKOSHI, JOURNAL OF MATERIALS CHIMISTRY, vol. 15, 2005, pages 1067 - 1071
SHUNSUKE SAKURAI ET AL., JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, vol. 74, no. 7, July 2005 (2005-07-01), pages 1946 - 1949
"Summary of Preprints in the 29th Scientific Lecture by the Applied Magnetic Society of Japan", APPLIED MAGNETIC SOCIETY OF JAPAN, vol. 21, 19 September 2005 (2005-09-19), pages 17
See also references of EP 2003094A4
Attorney, Agent or Firm:
WADA, Kenji (Lions Mansion Ichigaya8-10, Sumiyoshi-cho, Shinjuku-ku, Tokyo 65, JP)
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