Phonon spectra near metal-insulator phase transition in Li₁₊xTi₂₋xO₄ system
Li₁₊xTi₂₋xO₄ The phonons of two end members of Li₁₊xTi₂₋xO₄ spinel system, i.e., the metallic LiTi₂O₄ and the insulating Li[Li₁/₃Ti₅/₃]O₄, are calculated in superspace symmetry approach using a short-range force constant model. The composition dependence of zone-centre optical phonons in Li₁₊...
Збережено в:
| Дата: | 2004 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2004
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/118713 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Phonon spectra near metal-insulator phase transition in Li₁₊xTi₂₋xO₄ system / E.P. Buletsa, O.F. Ivanyas, V.J. Kindrat, I.I. Nebola, I.M. Shkirta, A.J. Shtejfan // Condensed Matter Physics. — 2004. — Т. 7, № 1(37). — С. 53-62. — Бібліогр.: 15 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Li₁₊xTi₂₋xO₄
The phonons of two end members of Li₁₊xTi₂₋xO₄ spinel system, i.e., the
metallic LiTi₂O₄ and the insulating Li[Li₁/₃Ti₅/₃]O₄, are calculated in superspace
symmetry approach using a short-range force constant model. The
composition dependence of zone-centre optical phonons in Li₁₊xTi₂₋xO₄
near phase transition and Li₁₋xMgxTi₂O₄ has been investigated using different
models of substitution. One- and two-mode behavior is therefore predicted
for F₁u and F₂u modes in case of tetrahedral and octahedral substitution,
respectively. |
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