JPS5573931A - High-recording-density magnetic disk - Google Patents

High-recording-density magnetic disk

Info

Publication number
JPS5573931A
JPS5573931A JP14650378A JP14650378A JPS5573931A JP S5573931 A JPS5573931 A JP S5573931A JP 14650378 A JP14650378 A JP 14650378A JP 14650378 A JP14650378 A JP 14650378A JP S5573931 A JPS5573931 A JP S5573931A
Authority
JP
Japan
Prior art keywords
magnetic disk
film
silicon nitride
compound
resistance
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
JP14650378A
Other languages
Japanese (ja)
Inventor
Yoshio Nakagawa
Ataru Yokono
Hitoshi Oka
Kenji Nakamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP14650378A priority Critical patent/JPS5573931A/en
Publication of JPS5573931A publication Critical patent/JPS5573931A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain a magnetic disk of high reliability and high recording density with corrosion resistance and resistance to wear both improved by providing as a protective film a thin film of a compound of a silicon nitride on a ferromagnetic metal film.
CONSTITUTION: On substrate 1 of a magnetic disk used for a CSS (contact start stop) system magnetic disk unit, base plating film 2 is formed and then ferromagnetic metal film 3 is provided. Next, compound film 4 of silicon nitride is formed as a protective film in a reaction plasma vapor-depositing method. Here, a compound of silicon nitride expressed by Si(2W4)N(3W5)O(0W1) is specially recommended. As original gas, SiH4 and NH3 are used and a parallel electrode type plasma CVD device, etc., are used to form protective film 4. In this way, a magnetic disk can be obtained which has resistance-to-wear of more than 40,000 in the number of times of CSS and sufficient corrosion resistance.
COPYRIGHT: (C)1980,JPO&Japio
JP14650378A 1978-11-29 1978-11-29 High-recording-density magnetic disk Pending JPS5573931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14650378A JPS5573931A (en) 1978-11-29 1978-11-29 High-recording-density magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14650378A JPS5573931A (en) 1978-11-29 1978-11-29 High-recording-density magnetic disk

Publications (1)

Publication Number Publication Date
JPS5573931A true JPS5573931A (en) 1980-06-04

Family

ID=15409091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14650378A Pending JPS5573931A (en) 1978-11-29 1978-11-29 High-recording-density magnetic disk

Country Status (1)

Country Link
JP (1) JPS5573931A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179939A (en) * 1982-04-15 1983-10-21 Nec Corp Magnetic storage body
JPS58179938A (en) * 1982-04-15 1983-10-21 Nec Corp Magnetic storage body
JPS6136703A (en) * 1984-07-20 1986-02-21 アメリカ合衆国 Metal covered mirror and manufacture thereof
JPS6177129A (en) * 1984-09-21 1986-04-19 Toshiba Corp Magnetic recording medium
JPS6177130A (en) * 1984-09-21 1986-04-19 Toshiba Corp Magnetic recording medium
JPS6177131A (en) * 1984-09-21 1986-04-19 Toshiba Corp Magnetic recording medium
US4588653A (en) * 1983-08-29 1986-05-13 Dynamic Disk, Inc. Magnetic memory disk
JPS61131225A (en) * 1984-11-30 1986-06-18 Toshiba Corp Magnetic recording medium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179939A (en) * 1982-04-15 1983-10-21 Nec Corp Magnetic storage body
JPS58179938A (en) * 1982-04-15 1983-10-21 Nec Corp Magnetic storage body
US4588653A (en) * 1983-08-29 1986-05-13 Dynamic Disk, Inc. Magnetic memory disk
JPS6136703A (en) * 1984-07-20 1986-02-21 アメリカ合衆国 Metal covered mirror and manufacture thereof
JPS6177129A (en) * 1984-09-21 1986-04-19 Toshiba Corp Magnetic recording medium
JPS6177130A (en) * 1984-09-21 1986-04-19 Toshiba Corp Magnetic recording medium
JPS6177131A (en) * 1984-09-21 1986-04-19 Toshiba Corp Magnetic recording medium
JPH0578088B2 (en) * 1984-09-21 1993-10-28 Tokyo Shibaura Electric Co
JPS61131225A (en) * 1984-11-30 1986-06-18 Toshiba Corp Magnetic recording medium

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