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Preparation method of reticular multilayer samarium-cobalt nanowire

A nanowire and mesh technology, applied in the field of permanent magnet materials, can solve the problems of nanowires that cannot stand, low coercive force of SmCo nanowires, and limited applications

Inactive Publication Date: 2021-04-20
汤春妹
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  • Abstract
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  • Claims
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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 of reticular multilayer samarium-cobalt nanowire

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Embodiment 1

[0019] 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, first adjust the angle of the polycarbonate film, so that the radiation angle between the polycarbonate film and the heavy ion beam is 45° o , and then rotate the polycarbonate film so that the radiation angle between the carbonate film and the heavy ion beam is -45 o , the polycarbonate film is irradiated with two heavy ion beams to form a network of nano-channels inside. The polycarbonate film is placed in Na(OH) solution, and the nano-channel network is formed by chemical etching The pores are expanded to form a PC channel template with a 3D network structure, with a pore size of 50nm. Finally, a 500 nm Au film is coated on the surface of the polycarbonate film...

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Abstract

The invention relates to a preparation method of a reticular multilayer samarium-cobalt nanowire. The preparation method comprises the following steps: preparing a polycarbonate (PC) film template containing a 3D reticular structure channel by using a high-energy heavy ion beam, preparing a net (SmCo) 1-xCux / Cu nanowire by using a pulse electrodeposition technology, and the obtained nanowire being of a mutually connected reticular structure and directly used as a magnetic nano device; and secondly, introducing a non-magnetic nano-layer Cu to enhance the demagnetization coupling interaction of samarium cobalt and improve the coercive force.

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 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, samarium cobalt nanowires ...

Claims

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Application Information

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IPC IPC(8): H01F1/00H01F41/02
Inventor 杨杭福黄霞妮吴琼葛洪良
Owner 汤春妹
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