JPS64707A - Manufacture of barium ferrite powder - Google Patents

Manufacture of barium ferrite powder

Info

Publication number
JPS64707A
JPS64707A JP62163601A JP16360187A JPS64707A JP S64707 A JPS64707 A JP S64707A JP 62163601 A JP62163601 A JP 62163601A JP 16360187 A JP16360187 A JP 16360187A JP S64707 A JPS64707 A JP S64707A
Authority
JP
Japan
Prior art keywords
barium ferrite
aqueous solution
hydroxide
ferrite powder
suspension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62163601A
Other languages
Japanese (ja)
Other versions
JPH01707A (en
Inventor
Akira Kamihira
Akie Watari
Eiji Tanaka
Masayuki Suzuki
Sukeko Samejima
Hidemasa Tamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP62163601A priority Critical patent/JPS64707A/en
Publication of JPH01707A publication Critical patent/JPH01707A/en
Publication of JPS64707A publication Critical patent/JPS64707A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To manufacture barium ferrite powder having small particle size and excellent particle size distribution efficiently by wet-reacting an aqueous solution including Fe3+ and Ba2+ or suspension containing a hydroxide thereof at normal pressure in high concentration alkali and thermally treating a barium ferrite product acquired in air.
CONSTITUTION: An aqueous solution containing Fe3+ and Ba2+ or suspension including a hydroxide thereof or both aqueous solution and suspension are wet-reacted at normal pressure in alkali concentration of 6W20mol/l, and a barium ferrite product obtained is thermally treated in air. When coercive-force reducing element ions such as Co2+ are added previously to the aqueous solution containing Fe3+ and Ba2+ or suspension including the hydroxide thereof, the coercive force of barium ferrite powder acquired is inhibited. When coercive- force increasing element ions such as Al3+ are added beforehand to the aqueous solution containing Fe3+ and Ba2+ or suspension including the hydroxide thereof, on the contrary, the coercive force of barium ferrite powder obtained is elevated.
COPYRIGHT: (C)1989,JPO&Japio
JP62163601A 1986-09-05 1987-06-30 Manufacture of barium ferrite powder Pending JPS64707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163601A JPS64707A (en) 1986-09-05 1987-06-30 Manufacture of barium ferrite powder

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP20892086 1986-09-05
JP61-208920 1986-09-05
JP62-59667 1987-03-14
JP62163601A JPS64707A (en) 1986-09-05 1987-06-30 Manufacture of barium ferrite powder

Publications (2)

Publication Number Publication Date
JPH01707A JPH01707A (en) 1989-01-05
JPS64707A true JPS64707A (en) 1989-01-05

Family

ID=26488991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163601A Pending JPS64707A (en) 1986-09-05 1987-06-30 Manufacture of barium ferrite powder

Country Status (1)

Country Link
JP (1) JPS64707A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019131675A1 (en) * 2017-12-27 2019-07-04 富士フイルム株式会社 Particles of magnetoplumbite-type hexagonal ferrite and method for manufacturing same, and radio wave absorber
WO2020044706A1 (en) * 2018-08-28 2020-03-05 富士フイルム株式会社 Magnetoplumbite-type hexagonal ferrite powder, production method therefor, and radio wave absorber
WO2020044649A1 (en) * 2018-08-28 2020-03-05 富士フイルム株式会社 Method of producing powder of magnetoplumbite-type hexagonal ferrite, and method of producing radio wave absorber
US12142834B2 (en) 2019-05-14 2024-11-12 Fujifilm Corporation Radio wave absorber
US12160984B2 (en) 2019-05-14 2024-12-03 Fujifilm Corporation Radio wave absorber
US12272875B2 (en) 2019-05-14 2025-04-08 Fujifilm Corporation Radio wave absorber
US12274042B2 (en) 2019-05-14 2025-04-08 Fujifilm Corporation Radio wave absorber and compound
US12426224B2 (en) 2019-08-09 2025-09-23 Fujifilm Corporation Radio wave absorbing composition and radio wave absorber

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2019131675A1 (en) * 2017-12-27 2020-11-19 富士フイルム株式会社 Magnetoplanbite type hexagonal ferrite particles, their manufacturing method, and radio wave absorber
US11721461B2 (en) 2017-12-27 2023-08-08 Fujifilm Corporation Particles of magnetoplumbite-type hexagonal ferrite, method for manufacturing the same, and radio wave absorber
WO2019131675A1 (en) * 2017-12-27 2019-07-04 富士フイルム株式会社 Particles of magnetoplumbite-type hexagonal ferrite and method for manufacturing same, and radio wave absorber
KR20200086706A (en) * 2017-12-27 2020-07-17 후지필름 가부시키가이샤 Magneto-plum bite-shaped hexagonal ferrite particles, manufacturing method thereof, and radio wave absorber
JPWO2020044706A1 (en) * 2018-08-28 2021-05-13 富士フイルム株式会社 Magnetoplumbite type hexagonal ferrite powder, its manufacturing method, and radio wave absorber
WO2020044706A1 (en) * 2018-08-28 2020-03-05 富士フイルム株式会社 Magnetoplumbite-type hexagonal ferrite powder, production method therefor, and radio wave absorber
KR20210031740A (en) * 2018-08-28 2021-03-22 후지필름 가부시키가이샤 Method for producing magneto plumbite type hexagonal ferrite powder and method for producing radio wave absorber
JPWO2020044649A1 (en) * 2018-08-28 2021-04-30 富士フイルム株式会社 Magnetoplanbite type hexagonal ferrite powder manufacturing method and radio wave absorber manufacturing method
WO2020044649A1 (en) * 2018-08-28 2020-03-05 富士フイルム株式会社 Method of producing powder of magnetoplumbite-type hexagonal ferrite, and method of producing radio wave absorber
EP3846185A4 (en) * 2018-08-28 2021-10-27 FUJIFILM Corporation MAGNETOPLUMBITE TYPE HEXAGONAL FERRITE POWDER PRODUCTION PROCESS, AND PROCESS FOR THE PRODUCTION OF A RADIO WAVE ABSORBER
JP2022022302A (en) * 2018-08-28 2022-02-03 富士フイルム株式会社 Magnetoplanbite type hexagonal ferrite powder and its manufacturing method, and radio wave absorber
KR20210029815A (en) * 2018-08-28 2021-03-16 후지필름 가부시키가이샤 Magnetoplumbite type hexagonal ferrite powder, manufacturing method thereof, and radio wave absorber
US12260977B2 (en) 2018-08-28 2025-03-25 Fujifilm Corporation Powder of magnetoplumbite-type hexagonal ferrite, method for producing the same, and radio wave absorber
US12183495B2 (en) 2018-08-28 2024-12-31 Fujifilm Corporation Magnetoplumbite-type hexagonal ferrite and method for producing radio wave absorber
US12160984B2 (en) 2019-05-14 2024-12-03 Fujifilm Corporation Radio wave absorber
US12142834B2 (en) 2019-05-14 2024-11-12 Fujifilm Corporation Radio wave absorber
US12272875B2 (en) 2019-05-14 2025-04-08 Fujifilm Corporation Radio wave absorber
US12274042B2 (en) 2019-05-14 2025-04-08 Fujifilm Corporation Radio wave absorber and compound
US12426224B2 (en) 2019-08-09 2025-09-23 Fujifilm Corporation Radio wave absorbing composition and radio wave absorber

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