JPS6478430A - Magnetic disk and its manufacture - Google Patents

Magnetic disk and its manufacture

Info

Publication number
JPS6478430A
JPS6478430A JP23593087A JP23593087A JPS6478430A JP S6478430 A JPS6478430 A JP S6478430A JP 23593087 A JP23593087 A JP 23593087A JP 23593087 A JP23593087 A JP 23593087A JP S6478430 A JPS6478430 A JP S6478430A
Authority
JP
Japan
Prior art keywords
ferromagnetic material
substrate
disk substrate
ferromagnetic
aggregate
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
JP23593087A
Other languages
Japanese (ja)
Inventor
Hideaki Niimi
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 Holdings 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 JP23593087A priority Critical patent/JPS6478430A/en
Publication of JPS6478430A publication Critical patent/JPS6478430A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To obtain a stable coercive force by providing a ferromagnetic metal thin film layer consisting of the aggregate of specified ferromagnetic material prismatic particles on a substrate while the disk substrate is rotated at high speed. CONSTITUTION:When the steam current of the ferromagnetic material 6 which has been heated and evaporated in a ferromagnetic material evaporation source 5 is sent to the disk substrate 4 while the disk substrate 4 is rotated at high speed by a driving motor 3 under a vacuum atmosphere, the ferromagnetic metal thin film layer 10 consisting of the aggregate of the ferromagnetic material prismatic particles 9 inclined from the normal direction of the substrate 4 to a peripheral direction is formed. Thus, the incident angle of a ferromagnetic material steam with respect to the substrate 4 becomes relatively large, and a self shadowing effect similar to oblique evaporation is displayed, whereby the coercive force is considerably improved.
JP23593087A 1987-09-18 1987-09-18 Magnetic disk and its manufacture Pending JPS6478430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23593087A JPS6478430A (en) 1987-09-18 1987-09-18 Magnetic disk and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23593087A JPS6478430A (en) 1987-09-18 1987-09-18 Magnetic disk and its manufacture

Publications (1)

Publication Number Publication Date
JPS6478430A true JPS6478430A (en) 1989-03-23

Family

ID=16993339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23593087A Pending JPS6478430A (en) 1987-09-18 1987-09-18 Magnetic disk and its manufacture

Country Status (1)

Country Link
JP (1) JPS6478430A (en)

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