JPS55140721A - Manufacture of ferrite fine grain powder - Google Patents

Manufacture of ferrite fine grain powder

Info

Publication number
JPS55140721A
JPS55140721A JP4740779A JP4740779A JPS55140721A JP S55140721 A JPS55140721 A JP S55140721A JP 4740779 A JP4740779 A JP 4740779A JP 4740779 A JP4740779 A JP 4740779A JP S55140721 A JPS55140721 A JP S55140721A
Authority
JP
Japan
Prior art keywords
alkoxides
ferrite
manufacture
grain size
cubic system
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.)
Granted
Application number
JP4740779A
Other languages
Japanese (ja)
Other versions
JPS6317775B2 (en
Inventor
Tsutomu Iimura
Hajime Shinohara
Shigeharu Naka
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP4740779A priority Critical patent/JPS55140721A/en
Publication of JPS55140721A publication Critical patent/JPS55140721A/en
Publication of JPS6317775B2 publication Critical patent/JPS6317775B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE: To obtain uniform ferrite fine grain powder with high sinter-ability by mixing Ni, Zn and Fe alkoxides out of metal alkoxides represented by M(OR)n; hydrolyzing the mixture to form cubic system spinel ferrite of a specified grain size; and heating the grains to a restricted temp.
CONSTITUTION: Ni, Zn and Fe alkoxides out of metal alkoxides represented by M(OR)n (where M is a mono- to pentavalent metal and R is alkyl) are mixed. The alkoxides include Ni(C2H5O)2, Zn(C2H5O)2 and Fe(C3H7O)3. The mixture is then hydrolyzed to form cubic system spinel ferrite with a grain size of 0.1μm or less, and the grains are heated at 800°C or below, preferably 400W600°C. Thus, cubic system spinel ferrite with a grain size of 0.1μ or less and high sinter-ability is obtd. It is advantageously used in manufacture of high-density sintered ferrite for a computer magnetic head material, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP4740779A 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder Granted JPS55140721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4740779A JPS55140721A (en) 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4740779A JPS55140721A (en) 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder

Publications (2)

Publication Number Publication Date
JPS55140721A true JPS55140721A (en) 1980-11-04
JPS6317775B2 JPS6317775B2 (en) 1988-04-15

Family

ID=12774259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4740779A Granted JPS55140721A (en) 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder

Country Status (1)

Country Link
JP (1) JPS55140721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58199723A (en) * 1982-05-17 1983-11-21 Sentan Kako Kikai Gijutsu Shinko Kyokai Manufacture of lanthanide-iron double oxide
US4486401A (en) * 1983-03-14 1984-12-04 Celanese Corporation Production of fine ferrimagnetic spinels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58199723A (en) * 1982-05-17 1983-11-21 Sentan Kako Kikai Gijutsu Shinko Kyokai Manufacture of lanthanide-iron double oxide
JPH0135778B2 (en) * 1982-05-17 1989-07-27 Sentan Kako Kikai Gijutsu Shinko Kyokai
US4486401A (en) * 1983-03-14 1984-12-04 Celanese Corporation Production of fine ferrimagnetic spinels

Also Published As

Publication number Publication date
JPS6317775B2 (en) 1988-04-15

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