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Journal Articles

Inter-atomic force constants of Ag$$_{2}$$O from diffuse neutron scattering measurement

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

Solid State Ionics, 225, p.18 - 21, 2012/10

https://doi.org/10.1016/j.ssi.2012.02.007
 Times Cited Count：12 Percentile：44.07(Chemistry, Physical)

Diffuse neutron scattering measurement on Ag$$_{2}$$O crystals was performed at 8 K and 295 K. The observed diffuse scattering intensities were analyzed by including the correlation effects among thermal displacements of atoms in Ag$$_{2}$$O. Using the values of correlation effects among neighboring atoms and the values of Debye-Waller temperature parameter, force constants among first, second and third nearest neighboring atoms have been evaluated.

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Diffuse neutron scattering measurements of Ag$$_{2}$$O and Cu$$_{2}$$O

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

no journal, , 

The correlation effects among thermal displacements of atoms in Ag$$_{2}$$O and Cu$$_{2}$$O 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.

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