E. Gratz et al., THE INFLUENCE OF THE CRYSTAL-FIELD ON THE ANISOTROPIC THERMAL-EXPANSION IN TMCU2, Journal of physics. Condensed matter, 5(43), 1993, pp. 7955-7958
The lattice parameters a, b and c of TmCu2 have been measured in the t
emperature range from 4.2 K up to 300 K using x-ray powder diffraction
. The influence of the crystal field on the thermal expansion in TmCu2
in the paramagnetic region bas been determined by comparing the therm
al expansion of the non-magnetic YCu2 with that of TmCu2 (TmCu2 orders
magnetically at T-N = 6.3 K). The data thus obtained are compared wit
h a theoretical model given by Gratz et al in 1993 using a set of crys
tal field parameters published by Gubbens et al in 1992. From this ana
lysis we get information about the unknown elastic and magnetoelastic
properties of TmCu2.