| Автор | H M Christen |
| Автор | R Sommer |
| Автор | N K Yushin |
| Автор | J J van der Klink |
| Дата выпуска | 1994-03-28 |
| dc.description | Decay-current and conventional dielectric measurements have been performed on single-crystal samples of the disordered perovskite Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>(PMN). Low-frequency dielectric data of Colla and co-workers(1992) on the same system are critically reanalysed and compared to our results. In contrast to previously proposed spin-glass or master-plot approaches, we suggest a phenomenological description in terms of alpha - and beta -relaxations: a relatively high-frequency beta -process takes over when the characteristic alpha -relaxation time becomes extremely long. The continuous slowing down of polar motion distinguishes PMN from related compounds such as Pb(Zn<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> for which, in contrast to PMN, there is evidence of astructural phase transition. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Small-signal dielectric relaxation in the disordered perovskite Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/13/020 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | 2631 |
| Последняя страница | 2642 |
| Аффилиация | H M Christen; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Аффилиация | R Sommer; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Аффилиация | N K Yushin; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Аффилиация | J J van der Klink; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Выпуск | 13 |
