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Oscillatory diffuse scattering study by time-of-flight neutron scattering

Basar, K.*; Xianglian*; Siagian, S.*; Sakuma, Takashi*; Takahashi, Haruyuki*; Yonemura, Masao*; Kamiyama, Takashi*; Ishigaki, Toru*; Igawa, Naoki   

Diffuse scattering is an important tool for analyzing disordered arrangement of atoms in crystals. In this study the oscillatory of diffuse scattering intensity of PbF$$_{2}$$ was observed both in wavelength-dispersive and angular-dispersive neutron scattering measurements, and we discuss the diffuse neutron scattering intensity by TOF measurement on powder sample of PbF$$_{2}$$ compared with those by angular-dispersive diffraction patterns. The diffuse scattering theory including the correlation effects among thermal displacements of atoms is effective for the treatment of diffuse background intensity obtained by TOF neutron experiment.

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Category:Physics, Condensed Matter

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