Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites
With a view to explain the thermoelectric effects of La₀.₈Ca₀.₂MnO₃ and La₀.Ce₀.₂MnO₃ polycrystalline samples and to seek the role of scattering mechanism, a systematic investigation of thermopower S(T) in the metallic phase have been undertaken. Within the relaxation time approximation, it is notic...
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| Дата: | 2010 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/117368 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites / D. Varshney, I. Mansuri, A. Yogi // Физика низких температур. — 2010. — Т. 36, № 7. — С. 790–796. — Бібліогр.: 19 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1173682017-05-23T03:02:41Z Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites Varshney, D. Mansuri, I. Yogi, A. Наноструктуры при низких температурах With a view to explain the thermoelectric effects of La₀.₈Ca₀.₂MnO₃ and La₀.Ce₀.₂MnO₃ polycrystalline samples and to seek the role of scattering mechanism, a systematic investigation of thermopower S(T) in the metallic phase have been undertaken. Within the relaxation time approximation, it is noticed that, the phonon drag S(T) with scattering of phonons from defects, grain boundaries, phonons and charge carriers in these samples are effective in the metallic regime. Later on, Mott expression is employed to incorporate the carrier diffusive thermopower. The temperature dependence of the S(T) is determined by competition among the several operating scattering mechanisms for the heat carriers and a balance between carrier diffusion and phonon drag contributions in the polycrystalline samples of La₀.₈Ca₀.₂MnO₃ and La₀.Ce₀.₂MnO₃. 2010 Article Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites / D. Varshney, I. Mansuri, A. Yogi // Физика низких температур. — 2010. — Т. 36, № 7. — С. 790–796. — Бібліогр.: 19 назв. — англ. 0132-6414 PACS: 73.50.Lw, 74.25.Kc, 75.47.Gk, 75.47.Lx http://dspace.nbuv.gov.ua/handle/123456789/117368 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Наноструктуры при низких температурах Наноструктуры при низких температурах |
| spellingShingle |
Наноструктуры при низких температурах Наноструктуры при низких температурах Varshney, D. Mansuri, I. Yogi, A. Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites Физика низких температур |
| description |
With a view to explain the thermoelectric effects of La₀.₈Ca₀.₂MnO₃ and La₀.Ce₀.₂MnO₃ polycrystalline samples and to seek the role of scattering mechanism, a systematic investigation of thermopower S(T) in the metallic phase have been undertaken. Within the relaxation time approximation, it is noticed that, the phonon drag S(T) with scattering of phonons from defects, grain boundaries, phonons and charge carriers in these samples are effective in the metallic regime. Later on, Mott expression is employed to incorporate the carrier diffusive thermopower. The temperature dependence of the S(T) is determined by competition among the several operating scattering mechanisms for the heat carriers and a balance between carrier diffusion and phonon drag contributions in the polycrystalline samples of La₀.₈Ca₀.₂MnO₃ and La₀.Ce₀.₂MnO₃. |
| format |
Article |
| author |
Varshney, D. Mansuri, I. Yogi, A. |
| author_facet |
Varshney, D. Mansuri, I. Yogi, A. |
| author_sort |
Varshney, D. |
| title |
Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites |
| title_short |
Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites |
| title_full |
Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites |
| title_fullStr |
Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites |
| title_full_unstemmed |
Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites |
| title_sort |
effect of ca(ce) doping on thermopower of lamno₃ manganites |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2010 |
| topic_facet |
Наноструктуры при низких температурах |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117368 |
| citation_txt |
Effect of Ca(Ce) doping on thermopower of LaMnO₃ manganites / D. Varshney, I. Mansuri, A. Yogi // Физика низких температур. — 2010. — Т. 36, № 7. — С. 790–796. — Бібліогр.: 19 назв. — англ. |
| series |
Физика низких температур |
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AT varshneyd effectofcacedopingonthermopoweroflamno3manganites AT mansurii effectofcacedopingonthermopoweroflamno3manganites AT yogia effectofcacedopingonthermopoweroflamno3manganites |
| first_indexed |
2023-10-18T20:29:39Z |
| last_indexed |
2023-10-18T20:29:39Z |
| _version_ |
1796150346027892736 |