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A preparation method of ferromagnetic granular film with perpendicular magnetic anisotropy

A ferromagnetic particle, anisotropic technology, which is applied in the direction of magnetic heads and magnetic recording heads using thin films, to achieve wide application prospects and the effect of superior room temperature ferromagnetic properties

Active Publication Date: 2017-12-19
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] So far, there is no report on a method that can be used to prepare ferromagnetic granular films with perpendicular magnetic anisotropy

Method used

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  • A preparation method of ferromagnetic granular film with perpendicular magnetic anisotropy
  • A preparation method of ferromagnetic granular film with perpendicular magnetic anisotropy
  • A preparation method of ferromagnetic granular film with perpendicular magnetic anisotropy

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0025] The method for preparing a ferromagnetic granular film with perpendicular magnetic anisotropy provided by the present invention adopts a liquid phase deposition method, and first utilizes a vacuum thin film deposition system to deposit an element that can form droplets or particles on the buffer layer, such as Ga, Al, In, Fe, Co, etc., form droplets or particles, and then deposit another element on the droplets, such as Mn, Pt, Pd, Al, Co, to prepare ferromagnetic materials with perpendicular magnetic anisotropy granular film.

[0026] Such as figure 1 as shown, figure 1 It is a flow chart of a method for preparing a ferromagnetic particle film with perpendicular magnetic anisotropy provided by the present invent...

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Abstract

The invention discloses a method for preparing a ferromagnetic granular film with perpendicular magnetic anisotropy, comprising: putting a substrate into a vacuum film deposition system; growing a buffer layer on the substrate; keeping the substrate at a certain temperature, Deposit an element X1 that can form droplets or particles on the buffer layer, and form multiple droplets or particles; continue to deposit an element X2 that can form an alloy with element X1 on the droplets or particles to complete the magnetic anisotropy Preparation of anisotropic ferromagnetic particle films. Utilizing the present invention, a ferromagnetic particle film with perpendicular magnetic anisotropy is prepared, and the ferromagnetic particle film has a uniform and controllable particle size, and has very superior room temperature ferromagnetic properties, making it suitable for use in perpendicular magnetic storage, Magneto-optical storage and high-sensitivity magnetic sensors have broad application prospects.

Description

technical field [0001] The invention relates to the technical fields of high-density magnetic storage, magneto-optical storage, and high-sensitivity magnetic sensors, and in particular to a preparation method of a ferromagnetic granular film with perpendicular magnetic anisotropy. Background technique [0002] In recent years, with the rapid development of information technology, the requirements for information storage density and storage speed have been increasing. In order to further increase the recording density of magneto-optical disks, magnetic disks, etc., the size of the magnetic unit in the recording medium must be reduced to less than 10nm, and at such a small size, the traditional horizontal recording mode has encountered an insurmountable limit - due to thermal disturbances. superparamagnetic effect. [0003] In order to overcome this limitation, the theory of perpendicular magnetic recording technology has come into people's field of vision and has received mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/31
Inventor 鲁军肖嘉星赵建华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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