Temperature dependence of the hyperfine quadrupolar interaction in K2ZrF6
Tóm tắt
The thermal dependence of the hyperfine quadrupolar interaction of181Ta at Zr sites in K2ZrF6 has been studied by TDPAC between RT and 511 °C. Four phases of ever increasing symmetry have been found in the range RT-437 °C. The possible existence of a healing mechanism with an activation energy of 0.187±0.040 eV is discussed for the lattice recovery in the range 270 °C–335 °C. The results at temperatures above 437 °C can be understood assuming a thermal decomposition of the compound.
Tài liệu tham khảo
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