Effects of Calcium Dissolution on the Structure of Strontium Titanate

Abstract

Abstract: (Ca__xSr_1-x)TiO₃ cell volume reduced with the increase of Ca content. This could lead to the increase of binding energy, but as shown by XPS analysis,
TiO₆ octahedral tilted and made bonds longer, thus decreased the binding energy. This observation supported the point of Myhra. Ca-added could lead to the change of
chemical potential, and cause an increase of the oxygen adsorption at grain boundaries. The varistor behavior of (Ca_xSr_1-x)TiO₃ ceramics was caused by the
shrinking of cell volume and the change of chemical environment.

Key words: SrTiO₃, CaTiO₃, solid solution, XPS

CLC Number:

TM22

MIAO Wei-Guo,WU Yin,ZHOU He-Ping. Effects of Calcium Dissolution on the Structure of Strontium Titanate[J]. Journal of Inorganic Materials.

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Effects of Calcium Dissolution on the Structure of Strontium Titanate

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