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Phase Field Modeling of the Zn_{1-x}Cd_xO Solid Solutions

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Shtepliuk I., Podolskaia N., Lashkarev G.

Acta Physica Polonica A

2014

vol. 126

issue 5

1079-1082

The analysis of spinodal decomposition in the Zn_{1-x}Cd_xO ternary alloy was carried out by means of the nonlinear Cahn-Hilliard equation. Interaction parameter as a function of composition x was provided by valence force field simulations and was used in this analysis. The morphological patterns for the ternary alloys with different Cd content (x=5, 10, 50%) were experimentally obtained using the semi-implicit Fourier-spectral method. The simulated microstructure evolution Zn_{0.95}Cd_{0.05}O demonstrates that the microstructure having a form of bicontinuous worm-like network is evolved with the progress of aging. An effect of the phase-field mobility and the gradient energy on the microstructure evolution of the Zn_{1-x}Cd_xO alloys is discussed. It was found that the higher driving force for the decomposition in the higher Cd content film results in a higher decomposition rate revealed by the simulations. The temporal evolution of the simulated Zn_{0.95}Cd_{0.05}O microstructure is in good agreement with experimental results, which have been obtained for this solid solution.

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1 Acta Physica Polonica A

1 2014

1 Lashkarev G.

1 Podolskaia N.

1 Shtepliuk I.

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Phase Field Modeling of the Zn_{1-x}Cd_xO Solid Solutions