JPS55140721A - Manufacture of ferrite fine grain powder - Google Patents
Manufacture of ferrite fine grain powderInfo
- 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
Links
Landscapes
- Soft Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Hard 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
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)
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 |
-
1979
- 1979-04-18 JP JP4740779A patent/JPS55140721A/en active Granted
Cited By (3)
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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