| Автор | R K Subramanian |
| Автор | K Venu |
| Автор | V S S Sastry |
| Дата выпуска | 1994-01-03 |
| dc.description | The dynamics of the ZnCl<sub>4</sub> anion in two compounds, one exhibiting a structural transition to an incommensurate phase (Rb<sub>2</sub>ZnCl<sub>4</sub>) and another not having any structural transition at all (Cs<sub>2</sub>ZnCl<sub>4</sub>), are studied through <sup>35</sup>Cl NQR frequency ( nu ) and relaxation time (T<sub>1Q</sub>) measurements as a function of temperature T in their high-temperature (paraelectric) phases. Estimates of the potential barriers hindering the reorientational motions of ZnCl<sub>4</sub> anions along axes parallel and perpendicular to the a axis of the crystal structure are obtained from the T<sub>1Q</sub> data. These results are analysed in conjunction with a qualitative comparison of relative mean square amplitudes of such motions obtainable from frequency data, in order to investigate the differences in the dynamics and structure of the ZnCl<sub>4</sub> anion. There seems to be correlation between the dynamics of the anion in this phase and the possibility that the compound may exhibit a structural instability at low temperatures in this family. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | <sup>35</sup>Cl nuclear quadrupole resonance study of anion dynamics in the paraelectric phases of Cs<sub>2</sub>ZnCl<sub>4</sub> and Rb<sub>2</sub>ZnCl<sub>4</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/1/015 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | 137 |
| Последняя страница | 146 |
| Аффилиация | R K Subramanian; Sch. of Phys., Hyderabad Univ., India |
| Аффилиация | K Venu; Sch. of Phys., Hyderabad Univ., India |
| Аффилиация | V S S Sastry; Sch. of Phys., Hyderabad Univ., India |
| Выпуск | 1 |
