Volume 34 Issue 4
Jul 2020
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LI Zuo, ZHANG Fengling, LIAO Dalin. Elastic Properties of HBT Crystal under High Pressure[J]. Chinese Journal of High Pressure Physics, 2020, 34(4): 041301. doi: 10.11858/gywlxb.20190823
Citation: LI Zuo, ZHANG Fengling, LIAO Dalin. Elastic Properties of HBT Crystal under High Pressure[J]. Chinese Journal of High Pressure Physics, 2020, 34(4): 041301. doi: 10.11858/gywlxb.20190823

Elastic Properties of HBT Crystal under High Pressure

doi: 10.11858/gywlxb.20190823
  • Received Date: 19 Aug 2019
  • Rev Recd Date: 20 Sep 2019
  • The lattice constants, elastic and anisotropy properties of HBT crystals at normal and high pressure were investigated by using the first-principle method based on density functional theory. The anisotropic properties of HBT crystal under high pressure were studied by using three different theoretical models. The results show that the elastic constant and elastic modulus of HBT crystal increase significantly under high pressure, and HBT crystal shows high-pressure toughness. Simultaneously, HBT crystal has large elastic modulus and mechanical anisotropy under high pressure. With increasing pressure, the extent of anisotropy of HBT crystal decreases. In addition, the thermodynamic properties show that HBT crystal has a higher Debye temperature, which increases with increasing pressure.

     

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