引用本文: | 程湘爱,余般梅,邓青华,等.富 BaCO3对YBCO超导样品的超导性能的影响[J].国防科技大学学报,2000,22(3):73-75.[点击复制] |
CHENG Xiangai,YU Banmei,DENG Qinghua,et al.Influence of Abundant BaCO3 on Properties of YBCO Superconductor[J].Journal of National University of Defense Technology,2000,22(3):73-75[点击复制] |
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富 BaCO3对YBCO超导样品的超导性能的影响 |
程湘爱, 余般梅, 邓青华, 艾杰, 钟辉煌, 胡心 |
(国防科技大学 理学院,湖南 长沙 410073)
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摘要: |
为提高123相高温超导材料的临界电流密度]c,本文从改变样品的用料配方、革新制备工艺等方面做了一些尝试和研究。在生成约10g123相超导样品正常配比的基础上,分别多加了5mg到100mg不等的 BaCO3,采用固相反应法制备了超导体块材。通过比较各样品的超导转变温度Tc、超导转变宽度ΔT、临界电流密度 ]c、扫描电镜照片和X-Ray衍射谱图,可以得出:富BaCO3123相超导体的超导转变温度Tc均大于90K;ΔT= 1~3K;20mg的富BaCO3有利于 123相的形成;一定量富BaCO3的加入对提高123相超导材料的临界电流密度Jc很有利。 |
关键词: 富 BaCO3123相超导体 超导转变温度 临界电流密度 XRD SEM |
DOI: |
投稿日期:1999-08-30 |
基金项目:国防科技大学试验技术资助项目(KD-98-X-083) |
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Influence of Abundant BaCO3 on Properties of YBCO Superconductor |
CHENG Xiangai, YU Banmei, DENG Qinghua, AI Jie, ZHONG Huihuang, HU xin |
(College of Science,National Univ. of Defense Technology,Changsha 410073,China)
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Abstract: |
In this paper,we try to change the material composition and renovate preparation technigues in order to improve critical electric current density(Jc)of high temperature superconductor. Based on 10g 123 phase normal proportion,BaCO3 from 5mg to 10mg are added respectively. AII sampIes are prepared by solid state reaction method. From the superconductor transit temperature(Tc),transit width ΔT,critical electric current density Jc,SEM and XRD chart,we can draw the conclusion that Tc of abundant 123 phase samples is above 90K(ΔT=1~3K);20mg BaCO3 is propitious to growth of 123 phase;some abundant BaCO3 help to improve Jc. |
Keywords: Abundant BaCO3 123 phase superconductor superconductor transit temperature critical electric current density XRD SEM |
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