JPS55140722A - Manufacture of ferrite fine grain powder - Google Patents

Manufacture of ferrite fine grain powder

Info

Publication number
JPS55140722A
JPS55140722A JP4740879A JP4740879A JPS55140722A JP S55140722 A JPS55140722 A JP S55140722A JP 4740879 A JP4740879 A JP 4740879A JP 4740879 A JP4740879 A JP 4740879A JP S55140722 A JPS55140722 A JP S55140722A
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
JP4740879A
Other languages
Japanese (ja)
Other versions
JPS6341852B2 (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 JP4740879A priority Critical patent/JPS55140722A/en
Publication of JPS55140722A publication Critical patent/JPS55140722A/en
Publication of JPS6341852B2 publication Critical patent/JPS6341852B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE: To obtain uniform ferrite fine grain powder with high sinter-ability by mixing Mn, 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: Mn, 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 Mn(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 magnetic head material, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP4740879A 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder Granted JPS55140722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4740879A JPS55140722A (en) 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4740879A JPS55140722A (en) 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder

Publications (2)

Publication Number Publication Date
JPS55140722A true JPS55140722A (en) 1980-11-04
JPS6341852B2 JPS6341852B2 (en) 1988-08-19

Family

ID=12774291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4740879A Granted JPS55140722A (en) 1979-04-18 1979-04-18 Manufacture of ferrite fine grain powder

Country Status (1)

Country Link
JP (1) JPS55140722A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021263A (en) * 1983-07-15 1985-02-02 Matsushita Electric Ind Co Ltd Base board for end surface type thermal head
JPS6186423A (en) * 1984-10-04 1986-05-01 Mitsubishi Mining & Cement Co Ltd Preparation of compound bismuth oxide
JPS6351156A (en) * 1986-08-21 1988-03-04 Nhk Spring Co Ltd Substrate for end surface type thermal head

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021263A (en) * 1983-07-15 1985-02-02 Matsushita Electric Ind Co Ltd Base board for end surface type thermal head
JPH0526659B2 (en) * 1983-07-15 1993-04-16 Matsushita Electric Ind Co Ltd
JPS6186423A (en) * 1984-10-04 1986-05-01 Mitsubishi Mining & Cement Co Ltd Preparation of compound bismuth oxide
JPS6351156A (en) * 1986-08-21 1988-03-04 Nhk Spring Co Ltd Substrate for end surface type thermal head

Also Published As

Publication number Publication date
JPS6341852B2 (en) 1988-08-19

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