Enhanced MgB2 Superconductivity Under High Pressure |
| |
作者姓名: | 刘振兴 革常青 |
| |
作者单位: | [1]Laboratoryforextremeconditionphysics,InstituteofPhysics,andBeijinghighPressureResearchCenter,ChineseAcademyofSciences,Beijing100080 [2]Laboratoryforextremeconditionphysics,InstituteofPhysics,andBeijinghi |
| |
摘 要: | We report on in situ high-pressure studies up to 1.0GPa 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 39K from the magnetic measurements.The in situ high-pressure measurements were carried out using a Be-Cu piston-cylinder-type instrument with mixed oil as the pressure transmitting medium which warrants a quasihydrostatic pressure environment at low temperature.The superconducting transitions were measured using the electrical conductance method.It is found that Tc increases by more than 1K with pressure in the low-pressure range,before the Tc valus decreases with the further increase of the pressure.
|
关 键 词: | MgB2 Mg超导性 高压 |
本文献已被 维普 等数据库收录! |
|