| Автор | M G Stachiotti |
| Автор | R L Migoni |
| Дата выпуска | 1991-05-27 |
| dc.description | The temperature dependence of the off-centre Li position and surrounding lattice polarization in Li:KTaO<sub>3</sub> is calculated within the quasiharmonic approximation using a nonlinear polarizability model. The Li displacement is found to be almost independent of temperature. Both the total dipole moment of the region where the Li dipole moment is reinforced by the lattice polarization and the size of this region become smaller with decreasing temperature. The Li displacement as well as the total dipole moment are described quantitatively by this model, provided that the Li concentration is below approximately 1%. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The validity of the non-linear shell model for localized dipole moments in Li<sub>x</sub>K<sub>1-x</sub>TaO<sub>3</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/3/21/002 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 3 |
| Первая страница | 3689 |
| Последняя страница | 3695 |
| Аффилиация | M G Stachiotti; Inst. de Fisica, Univ. Nacional de Rosario, Argentina |
| Аффилиация | R L Migoni; Inst. de Fisica, Univ. Nacional de Rosario, Argentina |
| Выпуск | 21 |
