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A kind of FeSe-based superconductor and preparation method thereof

A superconducting and superconducting technology, applied in the directions of binary selenium/tellurium compounds, metal selenide/tellurium compounds, etc., can solve the problems of low superconducting temperature and unclear superconducting mechanism, so as to improve the superconducting temperature and benefit the layer stable effect

Inactive Publication Date: 2020-06-02
TAIZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Among them, the superconducting temperature of superconducting materials is still low, and the superconducting mechanism is not clear enough

Method used

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  • A kind of FeSe-based superconductor and preparation method thereof
  • A kind of FeSe-based superconductor and preparation method thereof
  • A kind of FeSe-based superconductor and preparation method thereof

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Embodiment Construction

[0011] In order to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, see Figure 1 to Figure 2 :

[0012] N implemented according to the invention 0.81 D. 3.24 Fe 2 Se 2 superconductor. figure 1 Prepare N for the embodiment of the present invention 0.81 D. 3.24 Fe 2 Se 2 The refined XRD structure diagram of the superconductor. From the refined results, it can be known that N 0.81 D. 3.24 present in FeSe 4 Tetrahedral interlayer, FeSe 4 The tetrahedral lattice has a large deformation, and the specific lattice parameters are shown in Table 1; figure 2 Prepare N for the embodiment of the present invention 0.81 D. 3.24 Fe 2 Se 2 The superconducting temperature diagram of a superconductor, from figure 2 It can be seen that by inserting N 0.81 D. 3.24 Afterwards, the FeSe superconducting temperature ranges from 8 K to 37 ...

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Abstract

The invention relates to technologies of enhancing superconducting temperature and structural refinement through lattice control, and especially relates to an ammonium ion inserted FeSe superconducting layer and a preparation method thereof. The preparation method includes using a liquid ammonia method to prepare the FeSe intercalated superconductor. The method uses Ba as an intermediate, so thatN0.18D3.24 can be promoted to insert into a FeSe interlayer, the stability of the interlayer can be achieved, and therefore, the superconducting temperature can be enhanced.

Description

technical field [0001] The invention relates to the technical field of superconducting temperature control, in particular to a preparation method of a FeSe intercalation superconductor. Background technique [0002] The discovery of superconducting materials and the successful development of superconducting materials are one of the important achievements of scientific and technological progress in the 20th century. The resistance of certain substances disappears completely when the temperature is lowered to a certain value. This phenomenon is called superconductivity. Superconducting technology is a technology for studying the properties and functions of substances in the superconducting state, as well as the research, development and application of superconducting materials and superconducting devices. The development and application of superconducting technology is of great value to the national economy, military technology, scientific experiments and medical care. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04
CPCC01B19/007C01P2002/08C01P2002/72C01P2002/76C01P2002/77C01P2006/40
Inventor 钟文武陈基根郭建刚刘彦平申士杰林志萍
Owner TAIZHOU UNIV