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Preparation method for reticular samarium-cobalt multilayer magnetic nanowires

A magnetic nanometer and nanowire technology, applied in nanotechnology, electroforming nanostructure, inductor/transformer/magnet manufacturing, etc., can solve the problems of limited application, low coercivity of SmCo nanowires, and nanowires cannot stand. Improve coercivity and enhance the effect of demagnetization coupling interaction

Inactive Publication Date: 2021-04-13
汤春妹
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Problems solved by technology

Among them, Hebei University of Technology used electrodeposition and AAO alumina template to prepare samarium cobalt nanowires. By adjusting the ratio of Sm:Co ions, it was found that when the ratio of Sm:Co ions was 6:1, the obtained magnetic properties were the best, but The nanowires prepared by this method cannot stand and cannot be directly used as devices, which limits its application as nanodevices to a certain extent. At the same time, due to the nanoscale effect, the coercive force of the obtained SmCo nanowires is low lower

Method used

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  • Preparation method for reticular samarium-cobalt multilayer magnetic nanowires

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Embodiment 1

[0022] 1) Fabrication of mesh PC channel templates: use high-energy heavy ion beams to irradiate the surface of polycarbonate film (PC) with an energy of 5 MeV and a frequency of 1 Hz. The thickness of the polycarbonate film (PC) is 30 μm. The irradiation process In the process, with the heavy ion beam as the normal line, first adjust the angle of the polycarbonate film so that the radiation angle between the polycarbonate film and the heavy ion beam is 30° o , and then rotate the polycarbonate film so that the radiation angle between the carbonate film and the heavy ion beam is -30 o , after the polycarbonate is irradiated with heavy ion beams twice, a reticular nanochannel network is formed inside, the polycarbonate film is placed in Na(OH) solution, and the pores of the nanochannel network are etched by chemical etching. Expand to form a PC channel template with a 3D network structure, with a pore size of 50nm, and finally use the electron evaporation method to coat a layer...

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Abstract

The invention relates to a preparation method for reticular samarium-cobalt multilayer magnetic nanowires, which comprises the following steps: preparing a polycarbonate (PC) film template containing a 3D reticular structure channel by using a high-energy heavy ion beam, and preparing net (SmCo)1-xCux / Cu nanowires by using a pulse electrodeposition technology. The obtained nanowires are of a mutually connected reticular structure and can be directly used as a magnetic nano-device; and secondly, by introducing a non-magnetic nano-layer Cu, the demagnetization coupling interaction of samarium cobalt is enhanced, and the comprehensive magnetic performance of the samarium cobalt nanowires is improved.

Description

technical field [0001] The invention relates to a preparation method of a samarium-cobalt magnet, in particular to a preparation method of a meshed samarium-cobalt multilayer magnetic nanowire, and belongs to the technical field of permanent magnet materials. Background technique [0002] As the research basis of other low-dimensional nanomaterials, one-dimensional nanomagnetic materials are closely related to nanoelectronic devices and micro sensors, and have broad application prospects in the development of nanoelectronic devices in the microscopic field. They can be used as nanodevices, scanning tunnels, etc. Microscope tips, optical fibers, sensitive materials, VLSI connections, micro-drills, and reinforcements for composite materials. As the first and second generation permanent magnets, samarium cobalt permanent magnet materials still have important value because of their significant magnetic anisotropy and high Curie temperature. As a one-dimensional material, samari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/00C25D1/10C23C14/30C23C14/20B82Y40/00B22F3/11B22F3/24H01F41/02
CPCB22F3/002B22F3/1007B22F3/11B22F3/24B22F2003/248B22F2999/00B82Y40/00C23C14/20C23C14/30C25D1/006C25D1/10H01F41/0253B22F2201/11B22F2202/05
Inventor 杨杭福黄霞妮吴琼葛洪良
Owner 汤春妹
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