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Thermal vibration amplitudes of TlCl between 296 and 534 K
Author(s) -
Haav A. A.,
Peljo E.,
Suortti P.
Publication year - 1977
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220800129
Subject(s) - anharmonicity , debye model , amplitude , diffraction , thermal motion , ion , thermal , vibration , constant (computer programming) , materials science , analytical chemistry (journal) , chemistry , crystallography , condensed matter physics , physics , thermodynamics , optics , quantum mechanics , organic chemistry , computer science , programming language
The thermal motion parameters, B , of the Tl + and Cl ― ions of TICI are determined by X‐ray diffraction from powder samples between 296 and 534 K. The B ‐values increase linearly with temperature from B TI = 3.39 Å 2 and B CI = 2.09 Å 2 at 296 K to B TI = 5.68 Å 2 and B CI = 3.38 Å at 483 K. This corresponds to a constant Debye temperature of Θ M = 95 K. The results suggest strong second‐neighbour interactions and a mutual cancelation of the anharmonic effects.