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Microstructure development in Sb2O3-doped ZnO

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The microstructure development in Sb2O3-doped ZnO was studied at doping levels up to 2.0 mol%. Dopant Sb2O3 reacted with ZnO to form inclusion particles,α-Zn7Sb2O12, and inhibited the grain growth of ZnO. With increasing doping level of Sb2O3, the growth rate of ZnO decreased whereas that of inclusion particles increased. Some inclusion particles were trapped in ZnO grains at low doping levels of Sb2O3, but the volume fraction of trapped inclusion particles decreased with increasing doping level. Stereological analysis of the size and number ratios of ZnO grains and inclusion particles indicated that a compatible assumption is needed to evaluate Zener effect in two-phase sintering.

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Kim, J., Kimura, T. & Yamaguchi, T. Microstructure development in Sb2O3-doped ZnO. J Mater Sci 24, 2581–2586 (1989).

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