Superconducting Properties of Carbon and Zn Double-doped Mg1-xZnx(B1-xCx)(2)

作者：Liu Hengwei^*; Sun Aimin; Lu Yanzhong; Ma Yaotong; Ma Jinyuan; Wei Guidan; Zheng Long

来源：Journal of Superconductivity and Novel Magnetism, 2010, 23(8): 1525-1528.

DOI：10.1007/s10948-010-0807-8

• MgB2
• Substitution
• Transition temperature

A series of polycrystalline samples of Mg1-x Zn (x) (B1-x C (x) )(2) (x=0.00, 0.02, 0.04, 0.06, 0.08, and 0.10) were synthesized by a conventional solid-state reaction method under a background pressure about 10(-3) Pa. Phase identification, crystal structure and superconducting transition temperature (T (c)) were studied by means of X-ray diffraction (XRD) and resistivity measurements. The results indicated that the lattice parameters a and c show no clear trend in their changes with increasing doping level, and it turned out that the dopants had a marked effect on the crystal-lattice parameters and changed the crystal structure of the samples. The T (c) for Mg1-x Zn (x) (B1-x C (x) )(2) decreased with C and Zn doping, but the rate of decrease was slower than single C-doped.

• 出版日期2010-12
• 单位西北师范大学