中国物理B ›› 2001, Vol. 10 ›› Issue (5): 443-444.doi: 10.1088/1009-1963/10/5/316

• • 上一篇    

STRUCTURE AND SUPERCONDUCTIVITY OF Mg1-xLixB2

张健, 成昭华, 赵同云, 张绍英, 荣传兵, 沈保根   

  1. State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:2001-03-09 修回日期:2000-07-28 出版日期:2001-05-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China,and the State Key Program of Basic Research of China.

STRUCTURE AND SUPERCONDUCTIVITY OF Mg1-xLixB2

Zhang Jian (张健), Cheng Zhao-hua (成昭华), Zhao Tong-yun (赵同云), Zhang Shao-ying (张绍英), Rong Chuan-bing (荣传兵), Shen Bao-gen (沈保根)   

  1. State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2001-03-09 Revised:2000-07-28 Online:2001-05-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China,and the State Key Program of Basic Research of China.

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摘要： The effects of the substitution of Li for Mg in Mg1-xLixB2(x=0,0.1,0.2) on their structure and superconductivity have been investigated. It has been found by X-ray diffraction that the substitution of Li for Mg with x=0.1 and 0.2 does not cause phase transformation in these samples. However,the measurements of temperature-dependent normalized magnetization indicate the loss of superconductivity with the increase of Li content in these samples.

Abstract: The effects of the substitution of Li for Mg in Mg1-xLixB2(x=0,0.1,0.2) on their structure and superconductivity have been investigated. It has been found by X-ray diffraction that the substitution of Li for Mg with x=0.1 and 0.2 does not cause phase transformation in these samples. However,the measurements of temperature-dependent normalized magnetization indicate the loss of superconductivity with the increase of Li content in these samples.

Key words: superconductivity, magnesium diboride, lithium substitution

中图分类号:  (Transition temperature variations, phase diagrams)

  • 74.62.-c
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 61.66.Fn (Inorganic compounds) 74.70.Ad (Metals; alloys and binary compounds)