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Lattice dynamics of BaTiO3in the cubic phase
| Content Provider | Scilit |
|---|---|
| Author | Khatib, D. Migoni, R. Kugel, G. E. Godefroy, L. |
| Copyright Year | 1989 |
| Description | Journal: Journal of Physics: Condensed Matter The authors have calculated the phonon dispersion curves of barium titanate $(BaTiO_{3}$) 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. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-8984/1/49/002/pdf |
| Ending Page | 9822 |
| Page Count | 12 |
| Starting Page | 9811 |
| ISSN | 09538984 |
| e-ISSN | 1361648X |
| DOI | 10.1088/0953-8984/1/49/002 |
| Journal | Journal of Physics: Condensed Matter |
| Issue Number | 49 |
| Volume Number | 1 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1989-12-11 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Condensed Matter Condensed Matter Physics Critically Analysed Dispersion Curves Phonon Dispersion |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Materials Science |
