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Patent Searching and Data


Title:
SPINEL FERRITE MAGNETIC POWDER AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/082604
Kind Code:
A1
Abstract:
[Problem] Provided is a spinel ferrite magnetic powder having superior characteristics. [Solution] This production method for a magnetic powder comprises producing an amorphous body by melting, and then thereafter quenching, a glass-forming component and a spinel ferrite magnetic powder-forming component, thermally treating the amorphous body, and precipitating a spinel ferrite magnetic powder, wherein the partial pressure of oxygen during the thermal treatment is 1.0 kPa or less.

Inventors:
KATORI, Kenji (Konan Minato-k, Tokyo 75, 〒1080075, JP)
Application Number:
JP2018/036684
Publication Date:
May 02, 2019
Filing Date:
October 01, 2018
Export Citation:
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Assignee:
SONY CORPORATION (1-7-1, Konan Minato-k, Tokyo 75, 〒1080075, JP)
International Classes:
C01G49/00; C01G51/00; G11B5/706; G11B5/842; H01F1/11
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (402 Kadora Building, 1-1-11 Minami Ikebukuro, Toshima-k, Tokyo 22, 〒1710022, JP)
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