Correlation effects among atomic thermal displacements in oscillatory diffuse neutron scattering of ZnSe

Neutron scattering measurements have been performed on powder ZnSe at 15, 150 and 300 K. The temperature dependence of diffuse scattering is observed. Oscillatory diffuse scattering intensity is clearly observed at 150 and 300 K. The diffuse scattering theory including correlation effects among atom...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 600; no. 1; pp. 237 - 239
Main Authors Basar, Khairul, Siagian, Sainer, Xianglian, Sakuma, Takashi, Takahashi, Haruyuki, Igawa, Naoki
Format Journal Article
LanguageEnglish
Published Elsevier B.V 21.02.2009
Subjects
Correlation effects
Diffuse background scattering
Neutron scattering
Thermal displacements
ZnSe
Diffuse background scattering
Neutron scattering
ZnSe
Thermal displacements
Correlation effects
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Summary:Neutron scattering measurements have been performed on powder ZnSe at 15, 150 and 300 K. The temperature dependence of diffuse scattering is observed. Oscillatory diffuse scattering intensity is clearly observed at 150 and 300 K. The diffuse scattering theory including correlation effects among atomic thermal displacements is used as background function in the Rietveld analysis. The oscillatory diffuse neutron scattering intensity is explained by including the correlation effects among atomic thermal displacements of first, second and third nearest neighboring atoms. The inter-atomic distance and temperature dependence of the values of correlation effects among atomic thermal displacements are discussed.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2008.11.037