Disk disc, manufacturing method thereof and magnetic memory device

A manufacturing method and storage device technology, applied in static memory, digital memory information, information storage, etc., can solve the problems of insufficient magnetic anisotropy of recording medium materials, low thermal stability of magnetic recording media, etc.

Active Publication Date: 2019-08-09
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of this application is to provide a magnetic disk and its manufacturing method and magnetic memory storage device, aiming to solve the problem that the m...

Method used

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  • Disk disc, manufacturing method thereof and magnetic memory device
  • Disk disc, manufacturing method thereof and magnetic memory device
  • Disk disc, manufacturing method thereof and magnetic memory device

Examples

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no. 1 example

[0062] refer to Figure 4 , the present application also provides a first embodiment of a method for manufacturing a magnetic disk, the method for manufacturing a magnetic disk includes the following steps:

[0063] Step S10, depositing a magnetic layer on the substrate layer, wherein the magnetic layer includes a first iron-platinum alloy thin film, and the substrate layer is crystal;

[0064] Step S20, vacuum heating the substrate layer and the magnetic layer deposited on the substrate layer, so that the substrate layer induces the first iron-platinum alloy thin film to form an ordered magnetic layer;

[0065] In order to meet the requirements of good thermal stability and high magnetic anisotropy for the disk structure of the present application under various grain sizes, the magnetic layer is made of iron-platinum alloy material, and due to the The magnetic domains of the first iron-platinum alloy thin film (FePt) are perpendicular to the out-of-plane, and a substrate is ...

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PUM

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Abstract

The invention provides a disk disc. The disk disc comprises a substrate layer, a first electrode layer and a second electrode layer, the magnetic layer is positioned on the substrate layer. The protective layer is positioned on the magnetic layer; wherein the magnetic layer comprises a first iron-platinum alloy film. The substrate layer is a crystal, so that the substrate layer induces the first iron-platinum alloy film to form an ordered magnetic layer. The invention further provides a disk disc manufacturing method and a magnetic memory device. According to the disk disc, the iron-platinum alloy material is adopted as the magnetic layer, the magnetic anisotropy energy of the iron-platinum alloy is high, the requirement for the magnetic anisotropy energy of all grain sizes can be met, themagnetic layer is induced to form the ordered phase magnetic layer based on the substrate layer, and the magnetic recording medium is high in heat stability.

Description

technical field [0001] The present application relates to the field of magnetic recording equipment, in particular to a magnetic disk, a manufacturing method thereof, and a magnetic memory storage device. Background technique [0002] The statements herein merely provide background information related to the present application and do not necessarily constitute exemplary techniques. [0003] Magnetic storage technology is a very important technology, which is widely used to store computer data and audio and video signals. Many products derived from this technology have become a necessity in our daily life. The magnetic memory medium layer is the most studied in the magnetic memory storage device, and the magnetic recording medium can be divided into a horizontal magnetic recording (LMR) medium and a perpendicular magnetic recording (PMR) medium. Recording medium materials in exemplary technologies generally include Fe, Co, Ni, Cr, Pd, Ti, Ta, and alloys thereof. When the g...

Claims

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Application Information

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IPC IPC(8): G11C11/15
CPCG11C11/15
Inventor 卓恩宗林春燕
Owner HKC CORP LTD
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