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Carbon-based superconducting material and preparation method thereof

A superconducting material, carbon-based technology, applied in the field of carbon-based superconducting materials and its preparation, to achieve the effect of wide modulation range

Active Publication Date: 2021-07-13
SHENZHEN INST OF ADVANCED TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still few reports on the exploration of using metal carbides as superconducting materials

Method used

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  • Carbon-based superconducting material and preparation method thereof
  • Carbon-based superconducting material and preparation method thereof
  • Carbon-based superconducting material and preparation method thereof

Examples

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preparation example Construction

[0048] In addition, the present invention also provides a method for preparing a carbon-based superconducting material, which includes the following steps: under airtight conditions, pressurizing metal powder and carbon powder to make them metallized, and preparing the carbon-based superconducting material. Material.

[0049] see figure 1 , a flowchart of steps for preparing the carbon-based superconducting material provided by an embodiment of the present invention: includes the following steps:

[0050] Step S110: mixing the metal powder and the carbon powder to obtain a mixed powder, and performing tablet compression on the mixed powder to obtain a pre-pressed tablet of the mixed powder.

[0051] In some of these embodiments, the material ratio of the metal powder and the carbon powder is 1:n, where 4≤n≤12.

[0052] It can be understood that in order to obtain shaped products, metal powder and carbon powder need to be mixed and then tableted. Specifically, in the embodim...

Embodiment 1

[0065] In this embodiment, the carbon-based superconducting material is prepared by adopting the above-mentioned process flow from step S110 to step S140.

[0066] Wherein, in the step S110, the amount of the mixed carbon powder is controlled, so that the material ratio of the metal powder and the carbon powder used in the step S110 is 1:5.

[0067] Wherein, the pressure for pressurized pressing in step S140 is set to 160GPa.

[0068] The carbon-based superconducting material prepared in this example is determined by the CALYPSO method, and its crystal structure is as follows image 3 shown.

[0069] From image 3 It can be seen that the carbon superconducting material prepared in Example 1 is composed of metal atoms and carbon atoms with a substance ratio of 1:5, and its chemical formula is AgC 5 .

[0070] Figure 4 It is the electronic density of state spectrum of the carbon-based superconducting material prepared in Example 1.

[0071] From Figure 4 It can be seen ...

Embodiment 2

[0076] In this embodiment, the carbon-based superconducting material is prepared by adopting the above-mentioned process flow from step S110 to step S140.

[0077] Wherein, in the step S130, the amount of the mixed carbon powder is controlled, so that the material ratio of the metal powder and the carbon powder used in the step S110 is 1:6.

[0078] Wherein, the pressure for pressurized pressing in step S140 is set to 80GPa.

[0079] The carbon-based superconducting material prepared in this example is determined by the CALYPSO method, and its crystal structure is as follows Figure 6 shown.

[0080] From Figure 6 It can be seen from the above that the carbon-based superconducting material prepared in this example is composed of titanium atoms and carbon atoms with a material ratio of 1:6, and its chemical formula is TiC 6 .

[0081] Figure 7 It is the electronic density-of-state spectrum of the carbon-based superconducting material prepared in Example 2.

[0082] From...

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Abstract

According to a method for preparing a carbon-based superconducting material, the metal powder and the carbon powder serve as raw materials, and the raw materials are metallized through the mixed pressurizing and pressing treatment under a closed condition, so that the carbon-based superconducting material of metal carbide is obtained. The molecular formula of the prepared carbon-based superconducting material is MCn, and the prepared carbon-based superconducting material is a superconducting material system with binary metal characteristics, and a larger space is provided for the selection and application of superconducting materials.

Description

technical field [0001] The invention belongs to the technical field of superconducting materials, in particular to a carbon-based superconducting material and a preparation method thereof. Background technique [0002] Superconducting materials play an important role in the fields of energy, information electronics, and quantum devices because of their characteristic that the resistance will disappear at a certain temperature. The current superconducting materials can be roughly divided into traditional superconductors, copper-based superconductors, iron-based superconductors, interface superconductors, hydrogen-based superconductors and carbon-based superconductors, among which carbon-based superconductors are regarded as one of the most important high-temperature superconductors. [0003] For hydrogen-based superconducting materials, as early as 1935, Wigner et al. proposed that insulating solid hydrogen transforms into a metallic state under high pressure, that is, metall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/00H01B13/00
CPCH01B12/00H01B13/00Y02E40/60
Inventor 海玉龙钟国华蒋梦景田慧丽陆宁李文杰陈晓嘉
Owner SHENZHEN INST OF ADVANCED TECH
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