Study of elastic properties of CeO2 by statistical moment method

Hùng, Vũ Văn; Thanh, Le Thi Mai

doi:10.1016/j.physb.2011.07.012

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…The values of bulk modulus from SMM tend to be about 6% smaller than those obtained from MD simulation. The drastic changes in the elastic moduli and constants with the temperature arise from the thermal lattice expansion and the effects of the vibration entropy at elevated temperatures [21].…”

Section: Resultsmentioning

confidence: 99%

“…In our previous papers [20,21], a theoretical model taking into account the anharmonicity of thermal lattice vibrations was proposed to treat the thermodynamic and mechanical properties of CeO 2 crystal with fluorite structure. Obtained results are in good agreement with the experiments.…”

Section: Introductionmentioning

confidence: 99%

“…The ratio of stress to strain is known as Young's modulus E of elasticity and the ratio of shear stress to shear strain is known as the shear modulus G of elasticity. The expression of Young's modulus E is given by [21] ( )…”

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confidence: 99%

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Application of statistical moment method to investigate mechanical properties of yttria-stabilized zirconia

Lam¹,

Hùng²,

Hai³

et al. 2021

Phys. Scr.

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The mechanical properties of yttria-stabilized zirconia (YSZ) crystal under extreme conditions are theoretically investigated using the analytic free energy formulas derived from the statistical moment method. We calculate the elastic moduli and constants under temperature up to 2100 K and pressure up to 20 GPa using Buckingham potential. The dopant concentration, temperature, and pressure dependences of the elastic moduli and constants of YSZ crystal are studied taking into account the anharmonic effects of the lattice vibrations. Our results are in reasonable agreement with previous experiments and simulations. This approach can then be developed extensively to investigate the thermodynamic and mechanical properties of the other ceramic materials used in solid oxide fuel cells.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%