Hg Substitution Effect on Superconductivity and Crystal Structure of MgB2

Hg Substitution Effect on Superconductivity and Crystal Structure of MgB2

Polycrystalline Mg1-xHgxB2 samples with x=0, 1%, 2.5%, 5%, 7.5%, and 10% have been synthesized by solid-state reaction. Different from the substitution effect of Al, C, Li, etc. on crystal structure of MgB2, Hg substitution for Mg results in an increase of the lattice constant in both a and c direct...

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Veröffentlicht in:Journal of electronic science and technology of China 2008, Vol.6 (2), p.152-156
1. Verfasser: Ya-Jing Cui Yong-Liang Chen Ye Yang Yong Zhang Cui-Hua Cheng Yong Zhao
Format: Artikel
Sprache:eng
Schlagworte:
晶体结构
汞滴电级
电子技术
超导电性
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Zusammenfassung:Polycrystalline Mg1-xHgxB2 samples with x=0, 1%, 2.5%, 5%, 7.5%, and 10% have been synthesized by solid-state reaction. Different from the substitution effect of Al, C, Li, etc. on crystal structure of MgB2, Hg substitution for Mg results in an increase of the lattice constant in both a and c directions. The super- conductivity of MgB2 is also suppressed by Hg substitution. The observed suppression of super- conductivity by Hg substitution is discussed in terms of the interband impurity scattering effect in two-band superconductors.
ISSN:1672-6464