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Diffuse scattering study of thermal disorder in solid state ionics

固体イオニクス中の熱撹乱に関する散漫散乱

佐久間 隆*; Xianglian*; Basar, K.*; Siagian, S.*; 清水 識文*; 高橋 東之*; 井川 直樹   

Sakuma, Takashi*; Xianglian*; Basar, K.*; Siagian, S.*; Shimizu, Norifumi*; Takahashi, Haruyuki*; Igawa, Naoki

第3近接原子までの熱相関効果を用いてCuIとAgBrの中性子散漫散乱を解析した。相関効果の熱依存性が大きい場合は本手法を用いることでより精密化な解析が可能となること、原子間距離の増加又は温度降下により相関効果は減少することを明らかにした。

The diffuse neutron scattering intensities for CuI and AgBr were analyzed by the theory including the thermal correction effects up to 3rd nearest neighboring atoms. When we include the temperature dependence of the values of correlation effects, the obtained results by the refinement were improved than the former. The values of correlation effects decrease rapidly with the increase of inter-atomic distance. The values also decrease with the decrease of temperature.

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