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Title:
METHOD FOR PRODUCING COBALT FERRITE PARTICLES AND COBALT FERRITE PARTICLES PRODUCED BY SAME
Document Type and Number:
WIPO Patent Application WO/2020/217982
Kind Code:
A1
Abstract:
Provided are magnetic particles (cobalt ferrite) having a uniform particle size with a µm-scale average particle size. Desired cobalt ferrite particles are obtained by subjecting a cobalt ferrite precursor to a heating treatment in the presence of a sulfite salt.

Inventors:
MURATANI NAOKI (JP)
ARAI TSUBASA (JP)
KISHIMOTO AKIRA (JP)
Application Number:
PCT/JP2020/015761
Publication Date:
October 29, 2020
Filing Date:
April 08, 2020
Export Citation:
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Assignee:
NITTETSU MINING CO LTD (JP)
International Classes:
C01G49/00; C01G51/00; H01F1/34
Domestic Patent References:
WO1996028269A11996-09-19
Foreign References:
CN109574087A2019-04-05
CN101774646A2010-07-14
JPH0527481A1993-02-05
JP2016221807A2016-12-28
JP2017020539A2017-01-26
JP2004346272A2004-12-09
JP4138344B22008-08-27
JPH0324412B21991-04-03
JPS6047722A1985-03-15
JPS554399B21980-01-30
JPH05275224A1993-10-22
JP4113045B22008-07-02
JPH11131102A1999-05-18
Other References:
NGUYEN VIET LONG, YANG YONG, TERANISHI TOSHIHARU, THI CAO MINH, CAO YANQIN, NOGAMI MASAYUKI: "Synthesis and magnetism of hierarchical iron oxide particles", MATERIALS AND DESIGN, vol. 86, 1 December 2015 (2015-12-01), pages 797 - 808, XP055758704, ISSN: 0264-1275, DOI: 10.1016/j.matdes.2015.07.157
See also references of EP 3960706A4
Attorney, Agent or Firm:
MOEGI PATENT OFFICE (JP)
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