Premium
Thermal Expansion of Isotopically Substituted Alkali Hydrides
Author(s) -
Tyutyunnik V. I.
Publication year - 1994
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.2221810212
Subject(s) - alkali metal , thermal expansion , ion , chemistry , hydride , kinetic isotope effect , coulomb , thermal , inorganic chemistry , atomic mass , thermodynamics , atomic physics , deuterium , hydrogen , physics , organic chemistry , nuclear physics , electron
Abstract The effect of both temperature and isotope substitution on the distance between ions in alkali hydride crystals is investigated by means of the rigid‐ion model with only nearest‐neighbour interactions. It is shown that the thermal expansion may be described as a function of the Coulomb potential parameters and the cation‐anion reduced mass. For the first time, the thermal expansion data are calculated for Na, K, Rb, and Cs hydrides and deuterides. The calculation results are in agreement with experimental values.