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Cu-doped-ZnO nano columnar crystal film with room-temperature ferromagnetism and preparing method of Cu-doped-ZnO nano columnar crystal film

A room temperature ferromagnetic, columnar crystal technology, applied in metal material coating process, vacuum evaporation coating, coating and other directions, to achieve the effect of easy mass preparation, low cost of consumables, and large specific surface area

Active Publication Date: 2015-12-16
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the reported patents, researchers mainly focus on the acquisition of ferromagnetic properties of the ZnO dilute magnetic semiconductor thin film itself, the increase of the Curie temperature and the research on the preparation method, which is still far from the device application of the ZnO dilute magnetic semiconductor thin film. farther distance
However, there is no report on Cu-doped ZnO nanocolumnar thin film with room temperature ferromagnetism and its preparation method.

Method used

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  • Cu-doped-ZnO nano columnar crystal film with room-temperature ferromagnetism and preparing method of Cu-doped-ZnO nano columnar crystal film
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  • Cu-doped-ZnO nano columnar crystal film with room-temperature ferromagnetism and preparing method of Cu-doped-ZnO nano columnar crystal film

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preparation example Construction

[0029] Zn 1-x Cu x The preparation method of the O target is not limited, for example, it can be prepared by a solid phase reaction method. In one example, Zn 1- x Cu x The preparation method of the O target includes: mixing CuO powder and ZnO powder, grinding, pressing and forming operations, and then firing ZnO by solid state reaction method. 1-x Cu x O (x=0.01~0.1) target. In a more preferred example, Zn 1-x Cu x The preparation method of O target material comprises: (a) according to Zn 1-x Cu x O (x=0.01~0.1) Set the atomic ratio to weigh CuO powder with a purity of ≥99.99% and ZnO powder with a purity of ≥99.99%, mix these powders together, and put them into a grinding jar; (b) adopt the improved The horizontal ball mill (authorized announcement number: CN203235523U) fully grinds the CuO and ZnO powders loaded into the grinding tank; (c) presses the ground CuO and ZnO mixed powder according to the size of the target material; (d) The pressed Zn 1-x Cu x The O...

Embodiment 1

[0036] Example 1Zn 0.97 Cu 0.03 Preparation of O Nanocolumnar Thin Films

[0037] (1) The preparation of ceramic targets for thin film deposition, including: (a) using an electronic balance, according to Zn 0.97 Cu 0.03 The atomic ratio in the molecular formula of O weighs 1.500g of CuO powder with a purity of ≥99.99%, weighs 49.618g of ZnO powder with a purity of ≥99.99%, and mixes these powders together; (b) put these powders into an agate grinding jar, And put agate balls in it; (c) use an improved horizontal ball mill (authorized announcement number: CN203235523U) to fully grind the CuO and ZnO powders loaded into the grinding tank, and the grinding time is ≥ 48h; (d) take out the grinding The final powder is separated from the agate ball; (e) the ground CuO and ZnO mixed powder is pressed into a disc shape according to the size of the target; (f) the pressed ZnO 0.97 Cu 0.03 O the green body is put into the sintering furnace; (g) fully sintered under the condition of...

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Abstract

The invention relates to a Cu-doped-ZnO nano columnar crystal film with room-temperature ferromagnetism and a preparing method of the Cu-doped-ZnO nano columnar crystal film. The chemical formula of the film is Zn<1-x>Cu<x>o, wherein x is larger than or equal to 0.01 but smaller than or equal to 0.1. The film has the room-temperature ferromagnetism. The microstructure of the film is in a columnar crystal form within the nano scale range, and columnar structures are evenly distributed and arranged orderly. The microstructure of the Cu-doped-ZnO nano columnar crystal film is in the columnar crystal form within the nano scale range, on one hand, the film has the light guiding performance and electrical conductance performance in the preferential direction, and on the other hand, the film has a larger specific surface area; and accordingly the film of this type has superior magnetoelectric performance and magneto-optic performance.

Description

technical field [0001] The invention relates to a room-temperature ferromagnetic Cu-doped ZnO nano-columnar crystal thin film and a preparation method thereof, belonging to the field of preparation of novel semiconductor spin electronic device materials. Background technique [0002] ZnO dilute magnetic semiconductor thin film is the core material for spintronic devices. It has the advantages of independent magnetic injection, small lattice mismatch with conventional semiconductors, and long magnetic transport distance. It is currently a hot material in international research. Spintronic devices designed based on such materials, such as Spin-FET, Spin-MTJ, and Spin-LED, can realize the unification of information processing, transmission and storage functions, and have faster speed and smaller volume than conventional electronic devices. The advantages of smaller size and lower energy consumption have broad application prospects in the fields of computing and storage devices ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/08C23C14/35
Inventor 卓世异刘学超陈卫宾施尔畏孔海宽
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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