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...

Full description

Saved in:
Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 234; pp. 146 - 148
Main Authors Chernyshov, D.Yu, Smirnov, M.B., Menschikova, A.V., Mirgorodsky, A.P., Trounov, V.A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.1997
Subjects
Phonons
Powder diffraction
Rare-earth metals
Rare-earth metals
Powder diffraction
Phonons
Online AccessGet full text

Cover

More Information
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.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(96)00931-3