Title:
MAGNETIC RECORDING MEDIUM AND CARTRIDGE
Document Type and Number:
WIPO Patent Application WO/2023/176595
Kind Code:
A1
Abstract:
Provided is a magnetic recording medium that makes it possible to obtain satisfactory electromagnetic conversion characteristics and suppress increases in friction. This magnetic recording medium is a tape-like magnetic recording medium, and comprises a substrate and a magnetic layer. The average thickness of the magnetic recording medium is 5.30 μm or less. The magnetic layer contains chlorine atoms and nitrogen atoms, and the atomic concentration ratio (A2/A1) of the maximum chlorine atomic concentration A1 obtained by measuring the chlorine atomic concentration of the magnetic layer in the thickness direction thereof and the maximum nitrogen atomic concentration A2 obtained by measuring the nitrogen atomic concentration of the magnetic layer in the thickness direction thereof is 0.50-0.75 inclusive. The average value of the protruding peak height Rpk of the surface of the magnetic layer is 2.10 nm or less.
Inventors:
YAMAGA MINORU (JP)
Application Number:
PCT/JP2023/008622
Publication Date:
September 21, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G11B5/702; G11B5/70; G11B5/706; G11B5/733; G11B5/84; G11B21/10; G11B23/037
Domestic Patent References:
| WO2021215050A1 | 2021-10-28 |
Foreign References:
| JPH07110932A | 1995-04-25 | |||
| JPH0991697A | 1997-04-04 | |||
| JPH09274717A | 1997-10-21 |
Attorney, Agent or Firm:
SUGIURA PATENT OFFICE et al. (JP)
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