X-ray absorption fine structure study on the anharmonic effective pair potential in ZnO and Zn<sub>0.1</sub>Mg<sub>0.9</sub>O
T I Nedoseikina; A T Shuvaev; V G Vlasenko; T I Nedoseikina; Institute of Physics, Rostov State University, 194 Stachky Avenue, Rostov on Don, 344090, Russia; A T Shuvaev; Institute of Physics, Rostov State University, 194 Stachky Avenue, Rostov on Don, 344090, Russia; V G Vlasenko; Institute of Physics, Rostov State University, 194 Stachky Avenue, Rostov on Don, 344090, Russia
Журнал:
Journal of Physics: Condensed Matter
Дата:
2000-03-27
Аннотация:
X-ray-absorption fine structure (XAFS) measurements and analysis are presented for ZnO and Zn<sub>0.1</sub> Mg<sub>0.9</sub> O at different temperatures from 296 K to 760 K and from 373 K to 771 K, respectively. The anharmonic effective pair potentials of the Zn-O bond in these compounds are found from the analysis of the temperature-dependent XAFS data (Stern E A et al 1991 Phys. Rev. B 43 8850). The influence of the local structure parameters on the anharmonic effective pair potential is studied.
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