Elastic and thermodynamic properties of cubic perovskite type $$\hbox {NdXO}_{3}$$ (X=Ga, In)
| Autor: | Selgin Al |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Bulk modulus
Materials science Thermodynamics Young's modulus Type (model theory) Grüneisen parameter Condensed Matter Physics 01 natural sciences Thermal expansion 010305 fluids & plasmas Electronic Optical and Magnetic Materials Shear modulus symbols.namesake Lattice constant 0103 physical sciences symbols 010306 general physics Perovskite (structure) |
| Zdroj: | The European Physical Journal B. 94 |
| ISSN: | 1434-6036 1434-6028 |
| DOI: | 10.1140/epjb/s10051-021-00120-z |
| Popis: | The elastic and thermodynamic properties of $$\hbox {NdGaO}_{3}$$ and $$\hbox {NdInO}_{3}$$ with the space group Pm $$\bar{3}$$ m (no. 221) are studied for the first-time using density functional theory. The computed equilibrium lattice constants at stable phase are found to be 3.89 and 4.14 A which are in a good agreement with literature. Elastic constants are computed to evaluate mechanical behaviours of materials. By applying Born stability criteria for elastic constants, it is found that both materials are mechanically stable. Moreover, bulk and shear modulus, Poisson’ ratio, Cauchy pressures, and Young modulus are examined. Ductile and brittle behaviour analysis indicates that both materials are ductile in nature. The thermodynamic properties such as thermal expansion coefficient, Gruneisen parameter, bulk modulus, specific heat capacities, and entropy are computed at a temperature range of 0–1000 K. The calculated elastic and thermodynamic properties can serve as a reference for future investigations as some of these physical properties can be difficult to determine experimentally. |
| Databáze: | OpenAIRE |
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