Mean-square displacements of atoms in hexaborides
High-resolution neutron powder and single-crystal X-ray diffraction studies has been used to investigate the temperature dependencies of atomic mean-square displacements in rare-earth hexaborides. The experimental data on elastic constants and phonon frequencies have been used to improve the valence...
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Published in | Physica. B, Condensed matter Vol. 234; pp. 146 - 148 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.06.1997
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Subjects | |
Online Access | Get full text |
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Summary: | High-resolution neutron powder and single-crystal X-ray diffraction studies has been used to investigate the temperature dependencies of atomic mean-square displacements in rare-earth hexaborides. The experimental data on elastic constants and phonon frequencies have been used to improve the valence force field parameters for SmB
6 and the temperature dependencies of atomic mean-square displacements in SmB
6 is compared with theoretical values. The correlation between ionic radii and mean-square displacements of rare-earth atoms are shown. |
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ISSN: | 0921-4526 1873-2135 |
DOI: | 10.1016/S0921-4526(96)00931-3 |