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Nanostructure multifunctional ferromagnetic composite film material and preparation method

A composite film and nanostructure technology, applied in the application of magnetic film to substrate, metal material coating process, magnetic layer, etc., can solve the problems of single function, difficult control, complicated preparation process, etc. Realize the effect of multi-functionalization and wide application prospects

Inactive Publication Date: 2016-03-30
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing preparation process is cumbersome and not easy to control, so finding a better preparation method has aroused great concern
The functions of the composite materials currently used are relatively single, so a development trend of the required devices is multifunctional

Method used

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  • Nanostructure multifunctional ferromagnetic composite film material and preparation method
  • Nanostructure multifunctional ferromagnetic composite film material and preparation method
  • Nanostructure multifunctional ferromagnetic composite film material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 prepares 0-3 type FePt (0.1) :LaSrFeO 4(0.9) Nanoparticle Multifunctional Ferromagnetic Composite Thin Film

[0041] ① Target preparation and substrate cleaning: use high-purity La 0.5 Sr 0.5 FeO 3 (purity >99.95%, Hefei Yuanjing Technology Materials Co., Ltd.) ceramic laser target and high-purity Pt (purity >99.999%) metal magnetron target, respectively installed in the laser target position and the magnetron pulse laser co-sputtering device Magnetically controlled target.

[0042] ②Clean the 0.5mm thick quartz substrate in acetone and absolute ethanol with ultrasonic waves for 10 minutes, then dry it with high-purity nitrogen to ensure that the sample is completely clean, and then quickly put it into the sample stage of the magnetron and pulse co-sputtering device superior.

[0043] ③Grow nanoparticle multifunctional ferromagnetic composite film: the vacuum degree of the back and bottom of the vacuum chamber is 5×10 -5 Pa, the target spacing of las...

Embodiment 2

[0046] Example 2 FePt (0.3) :LaSrFeO4 (0.7) Preparation of Nanoparticle Multifunctional Ferromagnetic Composite Thin Films

[0047] ① Target preparation and substrate cleaning: use high-purity La 0.5 Sr 0.5 Fe 2 o 3 The ceramic laser target and the high-purity Pt metal magnetron target are respectively installed in the laser target position and the magnetron target position of the magnetron pulse laser co-sputtering device.

[0048] ②Clean the 0.5mm-thick double-thrown quartz substrate in acetone and absolute ethanol with ultrasonic waves for 10 minutes, then dry it with high-purity nitrogen to ensure that the sample is completely clean, and quickly put it into the magnetron and pulse co-sputtering device on the sample stage.

[0049] ③Grow nanoparticle multifunctional ferromagnetic composite film: the vacuum degree of the back and bottom of the vacuum chamber is 5×10 -5 Pa, the target spacing of laser pulse sputtering is 5cm, the target spacing of magnetron sputtering ...

Embodiment 31-3

[0053] Example 31-3 type FePt (0.1) :LaSrFeO 4(0.9) Preparation of Nanowire Multifunctional Ferromagnetic Composite Thin Films

[0054] Target preparation and substrate cleaning: use high-purity La 0.5 Sr 0.5 FeO 3 The ceramic laser target and the high-purity Pt metal magnetron target are respectively installed in the laser target position and the magnetron target position of the magnetron pulse laser co-sputtering device. Clean the 0.5mm thick single crystal STO (001) substrate in acetone and absolute ethanol with ultrasonic wave for 10 minutes, then dry it with high-purity nitrogen to ensure that the sample is completely clean, and quickly put it into the magnetron and pulse co-sputtering on the sample stage in the device.

[0055] Growth of nanowire multifunctional ferromagnetic composite film: the vacuum degree of the back and bottom of the vacuum chamber is 5×10 -5 Pa, the target distance of laser pulse sputtering is 5cm, and the target distance of magnetron sputter...

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Abstract

The invention discloses a nano-structure multifunctional ferromagnetic composite film material and a preparation method thereof. The preparation of the film material is realized by adopting a magnetic control pulse laser co-sputtering method, and a laser target position of a magnetic control pulse laser co-sputtering device selects an LaxN1-xMyO3 ceramic laser target material of which the purity is greater than 99.95%. A magnetic control target position selects a Pt metal magnetic control target material of which the purity is greater than 99.99%. When pulse laser is used for bombarding the target material, a sputtering object of the LaxN1-xMyO3 target material is subjected to chemical decomposition to form two materials, namely, magnetic metal M and an LaNMO4 dielectric medium under an anoxic condition; the magnetic metal material is combined with the magnetron sputtering metal material to form a magnetic alloy MPt; finally, the nano multifunctional ferromagnetic composite film MPt: LaNMO4 is obtained. According to the nano-structure multifunctional ferromagnetic composite film material and the preparation method, the regulation and control on magnetics, optics and electrical properties of the nano ferromagnetic composite film are realized, and the multi-functionalization of the composite film is realized.

Description

technical field [0001] The invention relates to a composite thin film material and a preparation method in magnetic information storage technology, in particular to a novel 0-3, 1-3 nanostructure multifunctional ferromagnetic composite thin film material and a preparation method. Background technique [0002] The study of magnetic materials has a long history. It has been found that when the size of magnetic materials is reduced to nanoscale, the obtained magnetic nanomaterials will have some strange physical phenomena, such as: changes in coercive force, superparamagnetic and Curie temperature drop, these characteristics make it have great application prospects in the fields of biomedicine, chemical catalysis and magnetic storage. [0003] At present, there are many methods for preparing nanometer multifunctional ferromagnetic composite films, which can be mainly divided into chemical and physical methods. Among them, physical synthesis mainly includes: magnetron sputterin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/18H01F10/18C23C14/35C23C14/34C23C14/08
Inventor 刘保亭贾艳丽闫启庚施健李晓红代秀红郭建新周阳赵庆勋
Owner HEBEI UNIVERSITY
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