| Автор | D Khatib |
| Автор | R Migoni |
| Автор | G E Kugel |
| Автор | L Godefroy |
| Дата выпуска | 1989-12-11 |
| dc.description | The authors have calculated the phonon dispersion curves of barium titanate (BaTiO<sub>3</sub>) in the cubic phase. A nonlinear shell model is used, in which the fourth-order anharmonic core-shell interaction of the oxygen ion is considered within a self-consistent phonon approximation. The temperature dependence of the ferroelectric soft mode is reproduced by their calculations, leading to the linear and nonlinear contributions of the O polarisability. The values of the relevant model parameters are critically analysed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Lattice dynamics of BaTiO<sub>3</sub> in the cubic phase |
| Тип | paper |
| DOI | 10.1088/0953-8984/1/49/002 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 1 |
| Первая страница | 9811 |
| Последняя страница | 9822 |
| Аффилиация | D Khatib; Lab. de Phys. du Solide, Univ. de Bourgogne, Dijon, France |
| Аффилиация | R Migoni; Lab. de Phys. du Solide, Univ. de Bourgogne, Dijon, France |
| Аффилиация | G E Kugel; Lab. de Phys. du Solide, Univ. de Bourgogne, Dijon, France |
| Аффилиация | L Godefroy; Lab. de Phys. du Solide, Univ. de Bourgogne, Dijon, France |
| Выпуск | 49 |
