Abstract
The concentration and temperature dependence of the quadrupole hyperfine interaction of111Cd in InTl (hcp),InPb (fct),InTl (fct) andInCd (fct and fcc) alloys were studied using the perturbed angular correlation technique. The change in the observed quadrupole interaction frequency with concentration can be described by a linear dependence on the axial ratioc/a in all cases. In the alloys with identical crystal structures the strength of thec/a dependence is independent of the solute, in contrast to the strength of the concentration dependence. In all cases where no phase transition occurs, the change in the electric field gradient with temperature follows the empirical relationV zz (T)=V zz(0) · (1−B·T 3/2), where the coefficientB depends on the lattice structure, on the solute-solvent combination and on the concentration. The phase transitions ofInCd alloys at 293 K could clearly be seen as discontinuities in the temperature curves. A similar series of discontinuities observed around 116 K suggests the existence of a cubic low temperature phase.
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Hoth, S., Engel, W., Keitel, R. et al. The effect of temperature and concentration on the electric field gradient in binary indium alloys. Z. Physik B - Condensed Matter 41, 99–105 (1981). https://doi.org/10.1007/BF01293408
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DOI: https://doi.org/10.1007/BF01293408