Thermodynamic properties of perovskite MgSiO3 with cubic structure under extreme conditions

Hoc Quang Nguyen (), Nhi Quynh Ngo (), Mai Thi Dao (), Vien Cong Tran (), Tra Thi Thu Lai (), Anh Thi Le () and An Thi Thuy Nguyen ()
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Hoc Quang Nguyen: Hanoi National University of Education
Nhi Quynh Ngo: Hanoi National University of Education
Mai Thi Dao: Hanoi National University of Education
Vien Cong Tran: Hanoi National University of Education
Tra Thi Thu Lai: Hanoi National University of Education
Anh Thi Le: Hanoi National University of Education
An Thi Thuy Nguyen: Tay Bac University

The European Physical Journal B: Condensed Matter and Complex Systems, 2024, vol. 97, issue 10, 1-8

Abstract: Abstract The article applies the thermodynamic theory built by statistical moment method (SMM) to determine numerically the temperature and pressure dependences of the thermal expansion coefficient, the heat capacity constant pressure and the Gruneisen parameter of MgSiO3 perovskite in the temperature range from 0 to 4000 K and in the pressure range from 0 to 135 GPa. Our SMM numerical results for MgSiO3 perovskite are compared with that for CaSiO3 perovskite, experimental data and results calculated by other methods. Our SMM numerical results are new and predictive of experimental results. This is the first application of SMM to study the thermodynamic characteristics of cubic MgSiO3 perovskite under extreme conditions of the Earth’s lower mantle. Graphical abstract

Date: 2024
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DOI: 10.1140/epjb/s10051-024-00804-2

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