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Local structure analysis of BaTiO$$_3$$ and KNbO$$_3$$ solid solution

Yoneda, Yasuhiro   ; Kohara, Shinji*; Kumada, Nobuhiro*; Wada, Satoshi*

The atomic-scale structure of solid solution of BaTiO$$_3$$ (BT) and KNbO$$_3$$ (KN) has been studied using high-energy X-ray diffraction, X-ray absorption fine structure, and atomic pair-distribution function analysis techniques. We prepared BT-KN solid solution through KNbTiO$$_5$$, in which Ti and Nb atoms are arranged randomly. The average structure of BT-KN solid solution was cubic structure and the local strcuture is also reproduced by the cubic structure. It is rare that a solid solution synthesized from ferroelectric materials has a local strcuture of a paraelectric material. Since the original correlation of BT or KN was lost, ferroelectricity disappeared in the BT-KN solid solution.

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Category:Physics, Applied

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