Diffuse Neutron Scattering from Cubic Lithium Sulphate at 908 K

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概要

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• The diffuse neutron scattering intensity for Li_2SO_4 at 908 K has been calculated using a treatment which includes correlation between thermal displacements of the atoms and reorientation of the SO^<2->_4 ions. The calculation of the diffuse neutron diffraction scattering for Li_2SO_4 powder is based on a structural model obtained from a recent analysis of single crystal neutron Bragg reflections for the high temperature cubic phase of Li_2SO_4. Relatively large correlations are required between the displacements of the atoms (λ_<s(S)s(O)> and λ_<s_n(O)s_<n'>(O) for n≠n') to obtain good agreement between calculated and observed diffuse intensities. It is shown that evidence for a "paddle-wheel mechanism" is difficult to obtain from an analysis of the diffuse neutron scattering intensities.

• 社団法人日本物理学会の論文
• 1993-09-15

著者

• Thomas O.

  Institute Of Chemistry Uppsala University

• SAKUMA Takashi

  Department of Physics,Faculty of Science,Ibaraki University

• Sakuma Takashi

  Departmen Of Physics Faculty Of Science Ibaraki University

• Thomas John

  Institute of Chemistry, Uppsala University

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