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Topological illuminator heterogeneous phase doped Bi(Pb)-Sr-Ca-Cu-O metasuperconductor and preparation method thereof

A -sr-ca-cu-o, luminophore technology, applied in luminescent materials, chemical instruments and methods, etc., can solve problems such as increasing the superconducting transition temperature of Bi-Sr-Ca-Cu-O superconductors

Inactive Publication Date: 2019-06-28
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
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Problems solved by technology

However, so far, people have not found an effective method to increase the superconducting transition temperature of Bi-Sr-Ca-Cu-O superconductors

Method used

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  • Topological illuminator heterogeneous phase doped Bi(Pb)-Sr-Ca-Cu-O metasuperconductor and preparation method thereof
  • Topological illuminator heterogeneous phase doped Bi(Pb)-Sr-Ca-Cu-O metasuperconductor and preparation method thereof
  • Topological illuminator heterogeneous phase doped Bi(Pb)-Sr-Ca-Cu-O metasuperconductor and preparation method thereof

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Embodiment Construction

[0020] The present invention adopts hydrothermal method to prepare Y 2 o 3 :Eu 3+ / Ag topological emitter dopant, using a solid-state sintering method to prepare a Bi(Pb)-Sr-Ca-Cu-O superconductor doped with a topological emitter heterogeneous phase. Concrete preparation process is as follows:

[0021] (1) Dopant Y 2 o 3 :Eu 3+ Preparation of / Ag topological light emitter: Weigh 0.153g Y 2 o 3 and 0.012g Eu 2 o 3 Place in a beaker, add excess concentrated hydrochloric acid dropwise into the beaker, heat in a fume hood at 70°C until white transparent crystals are precipitated, dry for 2 hours to obtain the precursor; dissolve the precursor in 4mL of water, slowly drop into the ammonium oxalate solution, Stir vigorously in a water bath at 2°C for 30 minutes, the solution turns from uniform and transparent to white colloidal precipitation, and then add a certain amount of AgNO 3 , stirred for 30 minutes; using NaOH solution to adjust the pH to 9-10, and stirred for 30 m...

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Abstract

The invention relates to a topological illuminator heterogeneous phase doped Bi(Pb)-Sr-Ca-Cu-O intelligent metasuperconductor and a preparation method thereof. The superconducting transition temperature of a Bi(Pb)-Sr-Ca-Cu-O superconductor is improved by utilizing topological illuminator doping. A Y2O3:Eu<3+> / Ag topological illuminator having 1 percent by mass of Ag is prepared by adopting a hydrothermal method, and the topological illuminator heterogeneous phase doped Bi(Pb)-Sr-Ca-Cu-O superconductor is prepared by adopting a solid-phase sintering method. Under the effect of an external electric field, the superconducting transition temperature of a Y2O3:Eu<3+> / Ag topological illuminator heterogeneous phase is excited to perform electroluminescence, and the superconducting transition temperature of a Bi(Pb)-Sr-Ca-Cu-O superconductor is influenced through electroluminescence. Changes of the superconducting transition temperature of a doped sample is studied by changing the mass percentage of a doping agent. Experiments discover that the superconducting transition temperature of a doped sample is higher than that of a pure sample.

Description

technical field [0001] The invention relates to a Bi(Pb)-Sr-Ca-Cu-O system intelligent superstructure superconductor and a preparation method thereof, which can improve Bi(Pb)-Sr- Transition temperature of Ca-Cu-O superconductors. Background technique [0002] In 1987, Michel discovered the Bi-based superconductor (Bi-Sr-Cu-O superconductor, whose critical temperature is 7-22K). Although its critical temperature is not high, it opened the way for the research of Bi-based superconductors with a critical temperature exceeding 100K. prelude. In 1988, Maeda et al. discovered a Bi-Sr-Ca-Cu-O superconductor with a transition temperature exceeding 100K, which set off a wave of researchers' research on Bi-based superconductors. Although the Bi-Sr-Ca-Cu-O superconductor is called a high-temperature superconductor, its critical parameters (especially the superconducting transition temperature T C ) and large-scale practical, there is still a big gap, so it needs to be modified. Ho...

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Application Information

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IPC IPC(8): C04B35/45C04B35/622C04B35/626C09K11/78
Inventor 赵晓鹏陈宏刚李勇波王明忠
Owner NORTHWESTERN POLYTECHNICAL UNIV
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