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Preparation method of twinned copper oxide doped europium room temperature ferromagnetic semiconductor material

A copper oxide and semiconductor technology, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of difficult to meet experimental conditions, low sample productivity, complex experimental equipment, etc., to achieve controllable doping, high productivity, and abundant Effect of crystal structure

Inactive Publication Date: 2019-03-19
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the methods of preparing twin samples include electrodeposition, pulse electroplating technology, asynchronous stack rolling method supplemented by heat treatment, carbothermal reduction method, ultra-low temperature rolling method, etc. It is difficult to achieve the doping of twin samples by the above methods, and there are experimental devices Complicated, difficult to operate, low sample productivity, difficult to meet experimental conditions, pollute the environment, etc.

Method used

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  • Preparation method of twinned copper oxide doped europium room temperature ferromagnetic semiconductor material
  • Preparation method of twinned copper oxide doped europium room temperature ferromagnetic semiconductor material
  • Preparation method of twinned copper oxide doped europium room temperature ferromagnetic semiconductor material

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1 Experimental device of the present invention

[0023] The present invention adopts a kind of simple gas and liquid chemical reaction experimental device and heat treatment device to prepare twin crystal copper oxide doped europium room temperature ferromagnetic semiconductor material, the experimental device is as figure 1 shown.

[0024] figure 1 Part a) of the experimental device is assembled and constructed, and is mainly divided into three parts: (1) Preparation of reaction gas H 2 The device of S; (2) the device that reacts and collects the reaction product; (3) the tail gas treatment device. In the production of reaction gas H 2 In the device of S, sodium sulfide solution is housed in the upper reagent bottle, the regulator and conduit for controlling the dripping speed of sodium sulfide solution are in the middle part, and the three-necked flask with hydrochloric acid solution is housed in the lower part. The regulator on the conduit in the devic...

Embodiment 2

[0027] First configure the raw materials required for the experimental preparation stage: use deionized water and copper acetate to prepare copper acetate solution with a copper ion concentration of 5mmol / L; use deionized water and europium acetate to configure europium acetate with an ion solubility of 10mmol / L Solution; use deionized water and polyvinylpyrrolidone to configure the polyvinylpyrrolidone solution with a concentration of 120mmol / L. Use a burette to drop 200ml of copper acetate solution, 6ml of europium acetate solution, and 184ml of deionized water into the beaker equipped with a stirring bar, and place the beaker on a magnetic stirrer for stirring. Take 10ml of polyvinylpyrrolidone solution and add dropwise to the mixed solution of copper acetate and europium acetate under stirring condition. After the mixed solution of copper acetate, europium acetate and polyvinylpyrrolidone is mixed uniformly, NaOH solution is dropped into the mixed solution until the pH val...

Embodiment 3

[0030] Configure the required raw materials for the experimental preparation stage under the conditions of Example 2, wherein 200ml of copper acetate solution, 6ml of europium acetate solution, and 184ml of deionized water are dripped into the beaker equipped with a stirrer with a burette, and the burette is used instead. 200ml of copper acetate solution, 8ml of europium acetate solution, and 182ml of deionized water were dropped into the beaker of the stirring bar, and other conditions and steps remained unchanged. The experimental process is the same as the experimental process described in Example 1.

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Abstract

The invention discloses a preparation method of a twin-crystal copper-oxide europium-doped material for room temperature ferromagnetic semiconductors and belongs to the technical field of preparation of crystal materials. The preparation method comprises the following steps of: by using simple experimental devices, and utilizing methods of inorganic of gas and liquid chemical reaction and heat treatment, preparing the twin-crystal copper-oxide europium-doped material, configuring materials needed by gas and liquid chemical reaction, and carrying out gas and liquid chemical reaction and heat treatment to prepare the twin-crystal copper-oxide europium-doped material and the like. The sample prepared by the invention has a unique twin-crystal structure, and the copper-oxide europium-doped material with special twin-crystal surfaces has potential application prospect. In addition, effective rare-earth element doping for the twin-crystal copper-oxide semiconductor material is implemented, and the crystal structure of the twin-crystal copper-oxide material is enriched, so that the twin-crystal copper-oxide europium-doped material has higher room-temperature saturation and magnetization intensity, is a potential diluted magnetic semiconductor and has an important value for research in the aspects of spinning electronic devices and nonvolatile memories and the like.

Description

technical field [0001] The invention belongs to the technical field of crystal material preparation. Preparation of twinned copper oxide doped europium (CuO:Eu) by inorganic synthesis involving gas and liquid chemical reactions and heat treatment 3+ ) method for room temperature ferromagnetic semiconductor materials. Background technique [0002] The properties of crystalline materials are closely related to their microstructure. The crystal structure contains defects, vacancies, etc., among which the twin structure is a typical defect structure. Twinning means that two crystals (or two parts of a crystal) form a mirror-symmetric orientation relationship along a common crystal plane (that is, a specific orientation relationship). These two crystals are called "twins". This common crystal plane called twin planes. Due to its unique crystal structure, twin crystals are widely used in the study of material mechanics. In-depth research on twin crystal materials will help to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/77C01P2004/80
Inventor 张明喆揣明艳
Owner JILIN UNIV