Method of using pulsed laser deposition to prepare independent dispersed cobalt ferrite nano column

A pulsed laser deposition, cobalt ferrite nanotechnology, applied in evaporation applications, applications from magnetic films to substrates, inductor/transformer/magnet manufacturing, etc. It is suitable for industrial applications and other problems, and achieves the effects of excellent structural stability, good heat transfer, and high magnetostrictive strength.

Active Publication Date: 2018-09-18
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the preparation of nanopillar arrays mostly relies on template-assisted or etching methods, which involve complex sample preparation processes and have diffusion problems, so they are not suitable for industrial applications.
As disclosed in patent document 201710693227.2, a method for preparing zinc oxide nanocolumn arrays requires the use of GaN templates with nanoarray patterns, and the overall preparation process is complicated; in addition, as disclosed in patent document 201310256681. The method of the ordered gallium nitride nanocolumn array is to grow a dielectric thin film on the gallium nitride substrate first, and then use the ultraviolet soft imprint double-layer adhesive stripping technology to obtain the metal ordered nanocolumn structure, and then obtain the metal ordered nanocolumn structure by reactive ion etching. Dielectric nanocolumn structure with adjustable diameter change, and finally using inductively coupled plasma etching to obtain GaN ordered nanocolumn arrays with different diameters; the overall preparation process is cumbersome, and it is not easy to achieve industrialized mass production

Method used

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  • Method of using pulsed laser deposition to prepare independent dispersed cobalt ferrite nano column
  • Method of using pulsed laser deposition to prepare independent dispersed cobalt ferrite nano column
  • Method of using pulsed laser deposition to prepare independent dispersed cobalt ferrite nano column

Examples

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Effect test

Embodiment 1

[0052] A method for preparing independently dispersed CFO nanocolumns on STO (100) substrates with a PLD system, comprising the following steps:

[0053] (1) Select the STO (100) substrate and pretreat it, specifically including the following steps:

[0054] a. Put the STO (100) substrate into the acetone (CH 3 COCH 3 ) in a beaker, and then fill the periphery of the beaker with foam, put it into an ultrasonic cleaner filled with deionized water, float the beaker in deionized water, and ultrasonically clean it at 55°C for 10 minutes;

[0055] b. Then immerse the STO (100) substrate in absolute ethanol, and ultrasonically clean it for 2 minutes;

[0056] c. Then immerse the STO (100) substrate in deionized water and ultrasonically clean it for 2 minutes;

[0057] d. Finally, use high-purity nitrogen (N 2 , 99.999%) to dry the STO (100) substrate.

[0058] (2) Using PLD system to prepare CFO nanocolumns on STO (100) substrates, select the laser as KrF (λ=248nm) excimer lase...

Embodiment 2

[0066] A method for preparing independently dispersed CFO nanocolumns on STO (110) substrates with PLD system, comprising the following steps:

[0067] (1) Select the STO (110) substrate and pretreat it, specifically including the following steps:

[0068] a. Put the STO (110) substrate into the acetone (CH 3 COCH 3 ) in a beaker, and then fill the periphery of the beaker with foam, put it into an ultrasonic cleaner filled with deionized water, float the beaker in deionized water, and ultrasonically clean it at 55°C for 10 minutes;

[0069] b. Then immerse the STO (110) substrate in absolute ethanol, and ultrasonically clean it for 2 minutes;

[0070] c. Then immerse the STO (110) substrate in deionized water and ultrasonically clean it for 2 minutes;

[0071] d. Finally, use high-purity nitrogen (N 2 , 99.999%) to dry the STO (110) substrate.

[0072] (2) Use PLD system to prepare CFO nanocolumns on STO (110) substrates, select the laser as KrF (λ=248nm) excimer laser, a...

Embodiment 3

[0080] A method for preparing independently dispersed CFO nanocolumns on STO(111) substrates with PLD system, comprising the following steps:

[0081] (1) Select the STO (111) substrate and pretreat it, specifically including the following steps:

[0082] a. Put the STO (111) substrate into the acetone (CH 3 COCH 3 ) in a beaker, and then fill the periphery of the beaker with foam, put it into an ultrasonic cleaner filled with deionized water, float the beaker in deionized water, and ultrasonically clean it at 55°C for 10 minutes;

[0083] b. Then immerse the STO (111) substrate in absolute ethanol, and ultrasonically clean it for 2 minutes;

[0084] c. Then immerse the STO (111) substrate in deionized water and ultrasonically clean it for 2 minutes;

[0085] d. Finally, use high-purity nitrogen (N 2 , 99.999%) to dry the STO (111) substrate.

[0086] (2) Use PLD system to prepare CFO nanocolumns on STO (111) substrates, select the laser as KrF (λ=248nm) excimer laser, and ...

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PUM

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Abstract

The invention discloses a method of using pulsed laser deposition to prepare an independent dispersed cobalt ferrite nano column. The method comprises following steps: selecting a substrate, preprocessing the substrate; adopting a pulsed laser deposition system to prepare independent dispersed cobalt ferrite nano columns on the preprocessed substrate by a rapid switching dual target material method; and carrying out a post treatment on the cobalt ferrite nano column sample prepared in the previous step. The disclosed preparation method has the advantages of simple preparation process and highyield, moreover, the whole preparation process can be precisely controlled, the quality of the prepared product is stable, and massive and industrial production can be realized.

Description

technical field [0001] The invention relates to the technical field of preparation of magnetic metal oxide micro / nano structure materials, and more specifically relates to a method for preparing independently dispersed cobalt ferrite nanocolumns by pulsed laser deposition. Background technique [0002] Magnetic oxides are one of the most abundant resources on earth and can be widely used in information storage, signal detection, biomedicine and other fields. Among them, cobalt ferrite (referred to as CFO) is not only a room temperature magnetic material, but also has the characteristics of high coercive field, high Curie temperature, high magnetostriction strength and medium magnetization strength, coupled with its excellent structural stability , making CFO more suitable for micro-nano devices than other magnetic materials. The nanopillars have vertically aligned structural features, so they have more interfaces, and since the constraints of the substrate in the nanopillar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/28C23C14/08C23C14/54H01F41/20
CPCC23C14/08C23C14/28C23C14/54H01F41/205
Inventor 钟高阔安峰李奥林谢淑红钟向丽王金斌
Owner XIANGTAN UNIV
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