LI Shao-Chun, WANG Ru-Ju, LI Feng-Ying, LIU Zhen-Xing, ZHU Jia-Lin, YU Ri-Cheng, JIN Chang-Qing
Laboratory for Extreme Condition Physics, Institute of
Physics, and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
Beijing Center for High Pressure Research, Chinese Academy of Sciences, Beijing 100080
Ultrasonic Properties of the MgB2 Superconductor
LI Shao-Chun;WANG Ru-Ju;LI Feng-Ying;LIU Zhen-Xing;ZHU Jia-Lin;YU Ri-Cheng;JIN Chang-Qing
Laboratory for Extreme Condition Physics, Institute of
Physics, and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
Beijing Center for High Pressure Research, Chinese Academy of Sciences, Beijing 100080
Abstract： The sound velocities of longitudinal and shear waves are measured on polycrystalline MgB2 superconductor with Tc of 39K. The specimen used in the experiments is pressed and heated using the MgB2 powder. The elastic moduli, Debye temperature and specific heat at room temperature are obtained based on sound velocity data. The results indicate that the velocities are much higher than those in the usual materials, while elastic constants remain reasonably soft, which may be due to the high transition temperature of the MgB2 superconductor.
(Mechanical and acoustical properties, elasticity, and ultrasonic Attenuation)
引用本文:
LI Shao-Chun;WANG Ru-Ju;LI Feng-Ying;LIU Zhen-Xing;ZHU Jia-Lin;YU Ri-Cheng;JIN Chang-Qing. Ultrasonic Properties of the MgB2 Superconductor[J]. 中国物理快报, 2001, 18(10): 1369-1370.
LI Shao-Chun, WANG Ru-Ju, LI Feng-Ying, LIU Zhen-Xing, ZHU Jia-Lin, YU Ri-Cheng, JIN Chang-Qing. Ultrasonic Properties of the MgB2 Superconductor. Chin. Phys. Lett., 2001, 18(10): 1369-1370.
2001, Vol. 18 
