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Lattice Specific Heats of Thallium and Yttrium
Author(s) -
Gupta R. P.
Publication year - 1967
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.19670200127
Subject(s) - yttrium , thallium , lattice constant , hexagonal crystal system , thermodynamics , lattice (music) , materials science , standard enthalpy of formation , chemistry , condensed matter physics , physics , inorganic chemistry , crystallography , metallurgy , quantum mechanics , diffraction , oxide , acoustics
The lattice specific heats of thallium and yttrium are calculated using the electron gas model of Gupta and Dayal for hexagonal metals. The interactions are restricted to fourth neighbours. The force constants are determined from experimental values of the elastic constants. The θ‐ T curves calculated from the computed specific heats show a fairly satisfactory agreement with the experimental values, i.e. the difference is not greater than 3% for thallium and 6% for yttrium.