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Preparation method of ferromagnetic granular film with vertical magnetic anisotropy

A ferromagnetic particle, anisotropic technology, applied in the direction of the use of thin film magnetic head, magnetic recording head, etc., to achieve a wide range of application prospects, the effect of superior room temperature ferromagnetic properties

Active Publication Date: 2015-09-09
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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  • Preparation method of ferromagnetic granular film with vertical magnetic anisotropy
  • Preparation method of ferromagnetic granular film with vertical magnetic anisotropy
  • Preparation method of ferromagnetic granular film with vertical 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 preparation method of a ferromagnetic granular film with vertical magnetic anisotropy; the method comprises the following steps: placing a substrate on a vacuum film deposition system; growing a buffer layer on the substrate; keeping the substrate at certain temperature, depositing an element X1 capable of forming liquid drops or particles on the buffer layer, and forming a plurality of liquid drops and particles; continue depositing an element X2, capable of forming alloy with the element X1, on the liquid drops or particles, thus completing the preparation of the ferromagnetic granular film with vertical magnetic anisotropy. The method can prepare the ferromagnetic granular film with vertical magnetic anisotropy, and the ferromagnetic granular film has uniform and controllable particle sizes and excellent room temperature ferromagnetism, thus providing wide application prospect in vertical magnetic storage, magneto-optical storage and high sensitivity magnetic sensor technical fields.

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 Applications(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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