Preparation method of magnetic metal or alloy film with nano-structure

A magnetic metal and alloy thin film technology, which is applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problems of poor controllability of thin film microstructure, high equipment requirements, difficult preparation, etc. Good regularity, high film-forming strength, simple equipment and process conditions

Active Publication Date: 2012-07-25
HUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have a common disadvantage: the control of the microstructure of the film is poor, and the prepared film is generally formed by agglomeration of spherical or quasi-spherical magnetic particles, and the preparation of magnetic metals and alloys composed of nanocryst

Method used

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  • Preparation method of magnetic metal or alloy film with nano-structure
  • Preparation method of magnetic metal or alloy film with nano-structure
  • Preparation method of magnetic metal or alloy film with nano-structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of magnetic nano-nickel thin film is:

[0033] Take 4 mmol of nickel chloride and 6 mmol of disodium ethylenediaminetetraacetic acid (EDTA) in a beaker filled with 20ml of distilled water and stir, slowly drop into 10ml of 20mol / L sodium hydroxide solution, and then add 50% concentration of 10ml of hydrazine hydrate and 40ml of absolute ethanol were stirred to form a reaction solution. A piece of copper foil that has been cleaned by ultrasonic waves is attached to the inner wall of the reaction vessel and circles around the inner wall. Transfer the configured reaction solution into a reaction vessel, and seal the vessel. Put the container into the hollow position of the circular cylindrical magnet, transfer the reactor and the magnet together into an oven and heat to 100°C, and react for 8 hours. After the reaction, take out the film in the reaction vessel and wash it with distilled water and ethanol to obtain a nanostructured magnetic nickel film...

Embodiment 2

[0036] A preparation method of magnetic nano-cobalt film is:

[0037]Take 4 mmol of cobalt chloride and 6 mmol of disodium ethylenediaminetetraacetic acid (EDTA) in a beaker filled with 20 ml of distilled water and stir, slowly drop into 10 ml of 20 mol / L sodium hydroxide solution, and then add 50% of 10ml of hydrazine hydrate and 40ml of absolute ethanol were stirred to form a reaction solution. A piece of copper foil that has been cleaned by ultrasonic waves is attached to the inner wall of the reaction vessel and circles around the inner wall. Transfer the configured reaction solution into a reaction vessel, and seal the vessel. Put the container into the hollow position of the circular cylindrical magnet, transfer the reactor and the magnet together into an oven and heat to 100°C, and react for 8 hours. After the reaction, take out the film in the reaction vessel and wash it with distilled water and ethanol to obtain a nanostructured magnetic cobalt film. The scanning el...

Embodiment 3

[0040] A preparation method of a magnetic nano-nickel-cobalt alloy thin film is as follows:

[0041] Take a mixture of 2mmol of nickel chloride and 2mmol of cobalt chloride, put it in a beaker filled with 20ml of distilled water with 1.25ml of triethylenetetramine and stir, slowly drop into 10ml of 20mol / L sodium hydroxide solution, and add the concentration of 50% 10ml of hydrazine hydrate and 40ml of absolute ethanol were stirred to form a reaction solution. A piece of copper foil that has been cleaned by ultrasonic waves is attached to the inner wall of the reaction vessel and circles around the inner wall. Transfer the configured reaction solution into a reaction vessel, and seal the vessel. Put the container into the hollow position of the circular cylindrical magnet, transfer the reactor and the magnet together into an oven and heat to 100°C, and react for 8 hours. After the reaction, take out the film in the reaction vessel and wash it with distilled water and ethanol...

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Abstract

The invention belongs to the technical field of nano-materials, and relates to a preparation method of a magnetic metal or alloy film with a nano-structure. The preparation method of the film comprises the following steps: (1) a reaction solution preparation: dissolving a magnetic metal salt in distilled water, adding an organic complexing agent, a strong base, a reducing agent and alcohols into the solution and stirring to form a clear and transparent solution, wherein the organic complexing agent contains at least one of amino, carboxyl and hydroxyl; and the alcohols with a boiling point lower than that of water are capable of mixing and dissolving with water; and (2) tightly pressing a substrate film on the inner wall of a reaction container, transferring the prepared reaction solution in the reactor, sealing the reactor and placing the reactor at the central part of an annular column-shaped magnet, and heating the reaction container to carry out the reaction, wherein the reduced metal or alloy nano-particles are migrated to the substrate film under the effect of a magnetic field and deposited on the film, then the magnetic metal or alloy film with the nano-structure is prepared. The preparation method is low in cost, simple in device and technical condition, cheap in reagent and applicable for production on a large scale.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for preparing a nanometer magnetic metal or alloy thin film. Background technique [0002] Nanostructured magnetic metal or alloy thin films are a very unique and important functional material, which can be widely used in ultra-high-density information storage, absorbing materials, catalysis, sensors, optoelectronic devices and other fields. From a microscopic point of view, the nanostructured magnetic film is formed by the fine nanostructure units spreading along the plane direction through close agglomeration. In other words, the nanostructured magnetic film can be regarded as a combination of many nanostructure units, and the properties of the film are actually a comprehensive reflection of the properties of all nanostructure units. Therefore, the size, shape, and combination of the basic units that make up the magnetic thin film will have a d...

Claims

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Application Information

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IPC IPC(8): C23C18/31
Inventor 李浩
Owner HUIZHOU UNIV
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