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一步熱處理制備氧化硼摻雜的YBCO超導(dǎo)膜
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作者單位:

1.東北大學(xué)冶金學(xué)院資源與環(huán)境工程研究所;2.東北大學(xué)冶金學(xué)院

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中圖分類號(hào):

TB383.2

基金項(xiàng)目:

國(guó)家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃 （201810145086 ）


Preparation of Boron Oxide Doped YBCO Superconducting Films by One-step Heat Treatment
Author:
Affiliation:

1.Institute of Resources and Environmental Engineering,School of Metallurgy, Northeastern University;2.School of Metallurgy, Northeastern University;3.School of Metallurgy,Northeastern University

Fund Project:

National College Students" innovation and entrepreneurship training program ( 201810145086 )

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    摘要:

    為了提高化學(xué)法制備長(zhǎng)帶YBCO的效率，傳統(tǒng)的前驅(qū)膜多次熱解過程需要被縮減為一次，熱解后不經(jīng)過降溫直接連接YBCO的晶化過程。采用異辛酸銅替代三氟乙酸銅，可以緩解熱解過程的集中放熱，緩解前驅(qū)膜的收縮。適量硼酸被添加進(jìn)1.0mol/L的前驅(qū)液，經(jīng)過一次連續(xù)熱處理，YBCO超導(dǎo)膜被制備出來。利用硼酸在200至500℃的流動(dòng)態(tài)這一特性，氧化硼填充進(jìn)YBCO氣孔，所得YBCO膜更加致密、光亮，與同樣條件無摻雜前驅(qū)液制備的YBCO對(duì)比，具有更高的超導(dǎo)電性。

    Abstract:

    In order to improve the efficiency of chemical preparation of YBa2Cu3O7?δ (YBCO) with long taps, the pyrolysis of traditional process preparing precursor film needs to be reduced to one step, so the crystallization process should be directly connected to the former without the cooling of pyrolysis. Replacing copper trifluoroacetate with copper isooctanate can alleviate the centralized heat release and the contraction of the precursor film during pyrolysis. A suitable amount of boric acid was added into the precursor solution with total cation concentration of 1.0 mol/L, after a continuous heat treatment YBCO superconducting film was obtained. Utilizing the flow state of boric acid at 200-500 ℃, boron oxide was doped into YBCO film which shows denser and smoother by filling some pores, compared with that one prepared by undoped precursor solution under the same conditions, the former shows higher superconductivity.

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李英楠,寧梓旭,米兆垠,吳金秋,齊曉童.一步熱處理制備氧化硼摻雜的YBCO超導(dǎo)膜[J].稀有金屬材料與工程,2020,49(5):1521~1525.[Li Yingnan, Ning Zixu, Mi Zhaoyin, Wu Jinqiu, Qi Xiaotong. Preparation of Boron Oxide Doped YBCO Superconducting Films by One-step Heat Treatment[J]. Rare Metal Materials and Engineering,2020,49(5):1521~1525.]
DOI：10.12442/j. issn.1002-185X.20181244

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  • 收稿日期:2018-12-13
  • 最后修改日期:2019-01-28
  • 錄用日期:2019-02-21
  • 在線發(fā)布日期: 2020-06-05
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