ISSN:
1063-7834
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The lattice heat conductivity κph of PrTe1.46 and LaTe1.46 has been measured within the 2-to 100-K interval. The quantity −Δκres(T), the decrease in the heat conductivity caused by resonant phonon scattering due to crystal-field-split paramagnetic levels of Pr, was derived from experimental data using the relation $$ - \Delta \kappa _{res} (T) = \kappa _{ph(PrTe_{1.46} )} (T) - \kappa _{ph(LaTe_{1.46} )} (T)$$ . The energy of the first split paramagnetic level of Pr, Δ1 was calculated from the Δκres(T) relation for T〈T res. It was found that Δ1 depends on the nature of the nearest neighbor environment of Pr ions in the lattice. The temperature dependence Δκres(T) has been determined to be Δκres(T) (Δκres∼T −0.5) for T〉T res.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.1332142
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