Novel indium-containing transition metal telluride superconducting material and preparation method thereof

A technology of transition metals and superconducting materials, which is applied in the fields of elemental compounds other than selenium/tellurium, selenium/tellurium compounds, chemical instruments and methods, etc., and can solve the problems of low superconducting temperature and so on.

Pending Publication Date: 2021-09-10
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although important progress has been made in the exploration and research of transition metal sulfide superconducting materials, many problems in this system are still to be solved, such as the superconducting temperature is generally low (the transition temperature of most transition metal layered sulfide superconductors is between 2K), the formation mechanism of charge density waves and the competitive relationship between superconductivity, etc.

Method used

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  • Novel indium-containing transition metal telluride superconducting material and preparation method thereof
  • Novel indium-containing transition metal telluride superconducting material and preparation method thereof
  • Novel indium-containing transition metal telluride superconducting material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Accurately weigh 0.0199g Cu, 0.1158g Ir, 0.1617g Te and 0.0027g In raw materials, place them in a quartz tube after fully grinding, and pump the quartz tube containing the fully ground raw materials to a vacuum degree of 1×10 -5 Torr, and seal the tube with an acetylene flame; then place the sealed quartz tube in a box furnace at 800°C for 120 hours of calcination, then open the quartz tube, fully grind the obtained powder and press it into tablets; Put it in the quartz tube again, and evacuate the quartz tube to a vacuum of 1×10 - 5 Torr, and seal the tube with an acetylene flame; then place the sealed quartz tube in a box furnace at 800 °C for 240 h to obtain CuIr 1.925 In 0.075 Te 4 Sample; then use X-ray powder diffraction (PXRD) to determine the purity of the sample; finally, the physical properties of the polycrystalline sample material will be systematically tested by the Physical Comprehensive Testing System (PPMS): mainly including electrical conductivity, m...

Embodiment 2

[0031] Accurately weigh 0.0198g Cu, 0.1170g Ir, 0.1613g Te and 0.0018g In raw materials, place them in a quartz tube after fully grinding, and pump the quartz tube containing the fully ground raw materials to a vacuum degree of 1×10 -5 Torr, and seal the tube with an acetylene flame; then place the sealed quartz tube in a box furnace at 800°C for 120 hours of calcination, then open the quartz tube, fully grind the obtained powder and press it into tablets; Put it in the quartz tube again, and evacuate the quartz tube to a vacuum of 1×10 - 5 Torr, and seal the tube with an acetylene flame; then place the sealed quartz tube in a box furnace at 800 °C for 240 h to obtain CuIr 1.95 In 0.05 Te 4 Sample; then use X-ray powder diffraction (PXRD) to determine the purity of the sample; finally, the physical properties of the polycrystalline sample material will be systematically tested by the Physical Comprehensive Testing System (PPMS): mainly including electrical conductivity, mag...

Embodiment 3

[0033] Accurately weigh 0.0198g Cu, 0.1183g Ir, 0.1610g Te and 0.0009In raw materials, place them in a quartz tube after fully grinding, and pump the quartz tube with fully ground raw materials to a vacuum degree of 1×10 -5 Torr, and seal the tube with an acetylene flame; then place the sealed quartz tube in a box furnace at 800°C for 120 hours of calcination, then open the quartz tube, fully grind the obtained powder and press it into tablets; Put it in the quartz tube again, and evacuate the quartz tube to a vacuum of 1×10 - 5 Torr, and seal the tube with an acetylene flame; then place the sealed quartz tube in a box furnace at 800 °C for 240 h to obtain CuIr 1.975 In 0.025 Te 4 Sample; then use X-ray powder diffraction (PXRD) to determine the purity of the sample; finally, the physical properties of the polycrystalline sample material will be systematically tested by the Physical Comprehensive Testing System (PPMS): mainly including electrical conductivity, magnetic prop...

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Abstract

The invention relates to a novel indium-containing transition metal telluride superconducting material and a preparation method thereof, and belongs to the technical field of quantum function material manufacturing. The preparation method is a traditional high-temperature solid-phase method and comprises the following steps: fully grinding Cu, Ir, In and Te according to corresponding stoichiometric ratios, vacuumizing, sealing in a quartz tube, putting the sealed quartz tube filled with raw materials into a furnace, and sintering at 800 DEG C for 120 hours to obtain CuIr2-xInxTe4 (x is greater than or equal to 0 and less than or equal to 0.1) polycrystalline powder. According to the invention, the physical properties of the material are tested through a comprehensive physical property test system (PPMS), and the superconducting physical properties of a target material are deeply investigated by measuring the physical properties such as conductivity, magnetic properties, upper and lower critical magnetic fields and the like of the material; the novel quasi-two-dimensional indium-doped transition metal tellurium compound superconducting material is reported for the first time; and by synthesizing the compound superconducting material, a new member is added for the family of transition metal sulfide superconducting materials, and people are helped to understand the physical properties of high-temperature copper-based or iron-based superconducting.

Description

technical field [0001] The invention belongs to the technical field of manufacturing quantum functional materials, and specifically relates to a series of chemical general formula CuIr 2-x In x Te 4 (0≤x≤0.1) novel indium-containing transition metal telluride superconducting material and a preparation method thereof. Background technique [0002] Superconductivity is one of the most fascinating macroscopic quantum phenomena in physics. Superconducting materials refer to materials that exhibit zero resistance and repel magnetic force lines under certain temperature conditions (generally lower temperatures). Due to the unique properties of complete diamagnetism and flux quantization, it has broad application prospects in the fields of power communication, industrial transportation, medical diagnosis, high-energy physics, energy transmission and military equipment. [0003] Since the phenomenon of superconductivity was discovered in 1911, it has continuously attracted the at...

Claims

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Application Information

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IPC IPC(8): C01B19/00
CPCC01B19/002C01P2006/40
Inventor 罗惠霞曾令勇佳玛何溢懿苏婉珍雷展鹏
Owner SUN YAT SEN UNIV
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