Abstract： We report on in situ high-pressure studies up to 1.0 GPa on the MgB2 superconductor which was high-pressure synthesized. The as-prepared sample is of high quality in terms of sharp superconducting transition (Tc) at 39 K from the magnetic measurements. The in situ high-pressure measurements were carried out using a Be-Cu piston-cylinder-type instrument with the mixed oil as the pressure transmitting medium which warrants a quasi-hydrostatic pressure environment at low temperature. The superconducting transitions were measured by using the electrical conductance method. It is found that Tc increases more than 1 K with pressure in the low-pressure range, before the Tc value decreases with the further increase of the pressure.
LIU Zhen-Xing;JIN Chang-Qing;YOU Jiang-Yang;LI Shao-Chun;ZHU Jia-Lin;YU Ri-Cheng;LI Feng-Ying;WANG Ru-Ju;SU Shao-Kui
. Enhanced MgB2 Superconductivity Under High Pressure[J]. 中国物理快报, 2002, 19(1): 120-123.
LIU Zhen-Xing, JIN Chang-Qing, YOU Jiang-Yang, LI Shao-Chun, ZHU Jia-Lin, YU Ri-Cheng, LI Feng-Ying, WANG Ru-Ju, SU Shao-Kui
. Enhanced MgB2 Superconductivity Under High Pressure. Chin. Phys. Lett., 2002, 19(1): 120-123.
2002, Vol. 19 
