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Magnetic recording media and magnetic recording apparatus

一种磁记录介质、磁记录层的技术，应用在磁记录、数据记录、图案记录载体等方向，能够解决表面差平坦度、热波动抵抗性劣化等问题

Inactive Publication Date: 2008-01-09
KK TOSHIBA
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Problems solved by technology

[0004] However, when the above-mentioned method is used to manufacture DTR media as they are, it has been found that there may be a problem that deterioration of thermal fluctuation resistance peculiar to magnetic recording may be caused, or it may occur that when a non-magnetic material is filled in a depressed portion between magnetic film patterns Problem with surface becoming poorly flat when medium

Method used

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  • Magnetic recording media and magnetic recording apparatus
  • Magnetic recording media and magnetic recording apparatus
  • Magnetic recording media and magnetic recording apparatus

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example

[0057] Hereinafter, the present invention will be explained more specifically based on examples.

[0058] DTR media were fabricated using the method of the present invention shown in FIG. 4 .

[0059] As the substrate 41, a lithium-based crystallized glass substrate having a diameter of 1.8 inches was used. After rinsing the substrate 41, it is introduced into a sputtering device, and a soft underlayer, an intermediate layer, and a magnetic layer 42 (perpendicular recording layer) are sequentially formed. A CoZr-based alloy is used for the soft magnetic underlayer, Ru is used for the intermediate layer, and a CoCrPt-based alloy is used for the perpendicular recording layer.

[0060] As the resist 43, SOG (OCD T-7 4000T, Tokyo Ohka Kogyo Co. Ltd.) was spin-coated on the magnetic layer at 5,000 rpm. The thickness of the applied resist was about 60 nm. Then, the resist (SOG) 43 is rinsed in an area of ​​300 micrometers from the peripheral edge. Cyclohexane was used as a rinse...

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Abstract

According to one embodiment, there is provided a magnetic recording media including a substrate, and a magnetic recording layer including magnetic film patterns formed in a protruded form on the substrate, sidewalls of the magnetic film patterns having at least two faces of different slope angles.

Description

technical field [0001] One embodiment of the present invention relates to a magnetic recording medium and a magnetic recording device. Background technique [0002] In recent years, discrete track recording media (DTR media) have attracted attention in order to handle higher densities of magnetic recording media. In the DTR media, adjacent recording tracks are separated by nonmagnetic material to reduce magnetic interference therebetween. When manufacturing such a discrete track recording medium, it is desirable to form a magnetic film pattern corresponding to a signal of a servo area by imprinting using a stamper together with a magnetic film pattern forming a recording track. If the pattern is formed in this way, the cost can be reduced because the servo track writing process can be omitted. [0003] As a typical imprint method, the following method is known (US Patent No. 5,772,905). First, polymethyl methacrylate (PMMA) as a thermoplastic resin was coated on a silicon...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/65
CPCB82Y10/00G11B5/743G11B5/855
Inventor 白鸟聪志樱井正敏镰田芳幸喜喜津哲
Owner KK TOSHIBA
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