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Chinese Journal of High Pressure Physics  > 2003  >  17(2): 157-160 .
ZHOU Bo, WANG Ru-Ju, ZHANG You-Lin, LI Feng-Ying, YU Ri-Cheng, JIN Chang-Qing. Elastic Properties of MgCNi3 Superconductor under Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 2003, 17(2): 157-160 . doi: 10.11858/gywlxb.2003.02.015
Citation: ZHOU Bo, WANG Ru-Ju, ZHANG You-Lin, LI Feng-Ying, YU Ri-Cheng, JIN Chang-Qing. Elastic Properties of MgCNi3 Superconductor under Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 2003, 17(2): 157-160 . doi: 10.11858/gywlxb.2003.02.015
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Elastic Properties of MgCNi3 Superconductor under Hydrostatic Pressure

doi: 10.11858/gywlxb.2003.02.015

  • Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

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  • Corresponding author: ZHOU Bo
  • Received Date: 21 Aug 2002
  • Rev Recd Date: 08 Oct 2002
  • Publish Date: 05 Jun 2003
    Abstract
  • Using Pulse-Echo Overlap Method, the velocities of longitudinal and shear waves of Ceramic MgCNi3 superconductor were measured up to hydrostatic pressure of 0.5 GPa. The bulk modulus B, shear modulus G, Debye temperature and specific heat under pressure were calculated. The values of Debye temperature D and specific heat cV under ambient condition are 454.82 K and 111.30 J/(molK), respectively. The B-p curve was fitted linearly to obtain B0, the first order derivative of bulk modulus at zero pressure. The Murnaghan equation of state was established.

     

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