Diffuse neutron scattering measurements of AgO and CuO

AgO及びCuOの中性子散漫散乱測定

酒井 竜太郎*; 和田 保*; 佐久間 隆*; 高橋 東之*; 神嶋 修*; 井川 直樹   ; Danilkin, S. A.*

Sakai, Ryutaro*; Wada, Tamotsu*; Sakuma, Takashi*; Takahashi, Haruyuki*; Kamishima, Osamu*; Igawa, Naoki; Danilkin, S. A.*

8K及び295KのAgOとCuOの中性子散漫散乱測定を行い、相関効果とDebye-Waller温度因子から第1及び第2最近接原子間力定数を求めた。これら力定数は一般的なイオン結晶の値とほぼ等しいことがわかった。

The correlation effects among thermal displacements of atoms in AgO and CuO are studied at 8 and 295 K by diffuse neutron scattering method. The force constants of these substances are obtained from the correlation effects and Debye-Waller temperature parameters. The mean square of the thermal displacements of atoms can be obtained in terms of correlation effects and Debye-Waller temperature parameters. The inter-atomic force constants among first and second nearest neighboring atoms have been estimated at room temperature. The calculated force constants in the present works were almost equal to that of ionic crystals.