| Автор | M El Marssi |
| Автор | R Farhi |
| Автор | Yu I Yuzyuk |
| Дата выпуска | 1998-10-12 |
| dc.description | Raman scattering experiments were performed on the relaxor ferroelectric lead magnesio-niobate (PMN), the ferroelectric 0.8 PMN-0.2 (PT) and the intermediate composition 0.9 PMN-0.1 PT. In order to understand in more detail the behaviour of this series, Raman scattering spectra were also collected under dc electric field. A ferroelectric phase could be induced in the latter composition for electric fields higher than a threshold value. The behaviour of this field-induced phase was compared with the (zero-field) ferroelectric phase in 0.8 PMN-0.2 PT. Barkhausen jumps were observed in the pyroelectric current measurements, and a strong dielectric anomaly was detected in zero field heating after field cooling experiments on 0.9 PMN-0.1 PT. These results are consistent with a description of the behaviour in this series based on a cancellation of 1:1 (Mg:Nb) domain random fields by titanium ions, favouring the onset of long range ferroelectric order. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Polarized Raman and electrical study of single crystalline titanium modified lead magnesio-niobate |
| Тип | paper |
| DOI | 10.1088/0953-8984/10/40/019 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 10 |
| Первая страница | 9161 |
| Последняя страница | 9171 |
| Выпуск | 40 |
