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Magnetic recording medium and magnetic memory

一种磁记录介质、磁存储的技术，应用在记录信息存储、磁记录、磁记录层等方向，能够解决很难形成面内织构等问题

Inactive Publication Date: 2005-05-25
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is actually difficult to form good AlRu when depositing thin films using Al and Ru using a multi-cathode system. 50 (002) in-plane texture

Method used

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  • Magnetic recording medium and magnetic memory
  • Magnetic recording medium and magnetic memory
  • Magnetic recording medium and magnetic memory

Examples

Experimental program
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Embodiment Construction

[0036] Figure 4 is a sectional view showing an important part of the first embodiment of the magnetic recording medium according to the present invention. exist Figure 4In , a seed layer 13 and an underlayer 14 made of an intermetallic binary alloy are deposited on a glass or Al substrate 11 . The seed layer 13 is mainly made of one element among the elements of the binary alloy base layer 14 . For example, you can pass N 2 or O 2 Partial pressure performs reactive sputtering on the seed layer 13 . On the bottom layer 14 is deposited a magnetic layer 17 made of Co alloy or CoCr alloy. The magnetic layer 17 has a (1120) crystallographic orientation, and may be composed of a single layer or a plurality of layers that are in direct contact and magnetically behave as one magnetic layer. On the magnetic layer 17, a protective layer 18 made of C and an organic lubricant layer 19 are deposited for use with a magnetic transducer such as a spin valve magnetic head.

[0037] Th...

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PUM

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Abstract

A magnetic recording medium includes a substrate, a magnetic recording layer made of a Co alloy or a CoCr alloy, a seed layer disposed between the substrate and the magnetic recording layer, and an underlayer made of a binary alloy material having a B2 structure and disposed between the seed layer and the magnetic recording layer. The seed layer is made of a material comprising essentially of one of elements forming the binary alloy material of the underlayer.

Description

technical field [0001] The present invention relates generally to magnetic recording media and magnetic storage devices, and more particularly, to magnetic recording media having a seed layer and an underlayer made of a binary alloy, and magnetic storage devices using such magnetic recording media. Background technique [0002] A typical longitudinal magnetic recording medium includes a sequentially stacked substrate, a seed layer, a Cr or Cr alloy bottom layer, a Co-Cr alloy intermediate layer, a Co alloy magnetic layer on which information is written, a C overlayer, and organic lubricants. Currently used substrates include NiP-coated Al-Mg alloy substrates and glass substrates. Glass substrates are more popular due to their shock resistance, smoothness, stiffness, light weight, and in the case of magnetic disks, less vibration (especially at the edges of the magnetic disk). [0003] Al substrates plated with NiP have been widely used for magnetic recording purposes for m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/738G11B5/00G11B5/012G11B5/64G11B5/66G11B5/73
CPCG11B5/012G11B5/656G11B5/7379Y10T428/265G11B5/737G11B5/672G11B5/676G11B5/62Y10S428/90
Inventor 安东尼·阿扬猪又明大E·诺埃尔·阿巴拉B·拉马穆尔蒂·阿查里雅
Owner FUJITSU LTD
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