JPS63220418A - Magnetic disk and production thereof - Google Patents

Magnetic disk and production thereof

Info

Publication number
JPS63220418A
JPS63220418A JP5496187A JP5496187A JPS63220418A JP S63220418 A JPS63220418 A JP S63220418A JP 5496187 A JP5496187 A JP 5496187A JP 5496187 A JP5496187 A JP 5496187A JP S63220418 A JPS63220418 A JP S63220418A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
cr
underlayer
formed
columnar grains
cr underlayer
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
JP5496187A
Inventor
Takashi Kubota
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

Links

Abstract

PURPOSE: To obtain a magnetic disk having superior magnetic characteristics with improved productivity by forming a Cr underlayer and coating the lateral parts of the columnar grains of the Cr underlayer with Cr oxide.
CONSTITUTION: A Cr underlayer 5 is formed on a substrate 1 with a polished underlayer 3 in-between and oxygen is diffused in the grain boundaries of the columnar grains 7 of the Cr underlayer 5 by heat treatment in a gaseous oxygen atmosphere. After only oxide formed on the top of the Cr underlayer 5 is removed by sputter etching with gaseous Ar, a Co-based magnetic layer 11 is formed. The lateral parts of the columnar grains 7 of the Cr underlayer 5 are coated with oxide 9 and Cr faces having a crystal structure are isolated from each other. Since the Co-based magnetic layer 11 is formed on the Cr underlayer 5, the columnar grains of the magnetic layer 11 performed epitaxial growth on the Cr faces and a magnetically insulated magnetic film is obtd. Thus, large coercive force can be obtd. even in case of a thin Cr film and productivity in an in-line apparatus can be improved.
COPYRIGHT: (C)1988,JPO&Japio
JP5496187A 1987-03-10 1987-03-10 Magnetic disk and production thereof Pending JPS63220418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5496187A JPS63220418A (en) 1987-03-10 1987-03-10 Magnetic disk and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5496187A JPS63220418A (en) 1987-03-10 1987-03-10 Magnetic disk and production thereof

Publications (1)

Publication Number Publication Date
JPS63220418A true true JPS63220418A (en) 1988-09-13

Family

ID=12985266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5496187A Pending JPS63220418A (en) 1987-03-10 1987-03-10 Magnetic disk and production thereof

Country Status (1)

Country Link
JP (1) JPS63220418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7160571B2 (en) 2001-12-25 2007-01-09 Fuji Electric Co., Ltd. Method of manufacturing a magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7160571B2 (en) 2001-12-25 2007-01-09 Fuji Electric Co., Ltd. Method of manufacturing a magnetic recording medium

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