JPS53115695A - Method for producing ferromagnetic iron oxide powder - Google Patents

Method for producing ferromagnetic iron oxide powder

Info

Publication number
JPS53115695A
JPS53115695A JP3081077A JP3081077A JPS53115695A JP S53115695 A JPS53115695 A JP S53115695A JP 3081077 A JP3081077 A JP 3081077A JP 3081077 A JP3081077 A JP 3081077A JP S53115695 A JPS53115695 A JP S53115695A
Authority
JP
Japan
Prior art keywords
iron oxide
oxide powder
ferromagnetic iron
producing ferromagnetic
powder
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
JP3081077A
Other languages
Japanese (ja)
Inventor
Shigeo Hirai
Akira Matsumoto
Kunio Wakai
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.)
Maxell Ltd
Original Assignee
Hitachi Maxell 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 Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP3081077A priority Critical patent/JPS53115695A/en
Publication of JPS53115695A publication Critical patent/JPS53115695A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To provide a method for producing a ferromagnetic iron oxide powder, comprising causing β-FeOOH to adhere on Fe3O4 magnetic powder, and thereafter reducing the powder or oxidizing the same after the reduction, thereby to obtain a ferromagnetic iron oxide powder excellently suitable for a recording element of a magnetic recorder, and having an excellent dispersibility.
COPYRIGHT: (C)1978,JPO&Japio
JP3081077A 1977-03-18 1977-03-18 Method for producing ferromagnetic iron oxide powder Pending JPS53115695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3081077A JPS53115695A (en) 1977-03-18 1977-03-18 Method for producing ferromagnetic iron oxide powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3081077A JPS53115695A (en) 1977-03-18 1977-03-18 Method for producing ferromagnetic iron oxide powder

Publications (1)

Publication Number Publication Date
JPS53115695A true JPS53115695A (en) 1978-10-09

Family

ID=12314037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3081077A Pending JPS53115695A (en) 1977-03-18 1977-03-18 Method for producing ferromagnetic iron oxide powder

Country Status (1)

Country Link
JP (1) JPS53115695A (en)

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