Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10)
We report the room temperature thermal conductivity κ and thermal diffusivity α of polycrystalline La 0.7Ca 0.3-xSr xMnO 3 for x = 0 to 0.1. The samples were prepared by heating at 1220 and 1320°C. The insulator-metal transition temperature, T IM and thermal diffusivity increased with Sr content. Ph...
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2018
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| Online Access: | http://dspace.uniten.edu.my/jspui/handle/123456789/9417 |
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uniten-123456789-9417 |
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uniten-123456789-94172018-02-28T23:58:31Z Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) Alwi, H.A. Ewe, L.S. Ibrahim, Z. Ibrahim, N.B. Abd-Shukor, R. We report the room temperature thermal conductivity κ and thermal diffusivity α of polycrystalline La 0.7Ca 0.3-xSr xMnO 3 for x = 0 to 0.1. The samples were prepared by heating at 1220 and 1320°C. The insulator-metal transition temperature, T IM and thermal diffusivity increased with Sr content. Phonon was the dominant contributor to thermal conductivity and the electronic contribution was less than 1%. Enhancement of electrical conductivity σ and thermal diffusivity for x ≥ 0.08 was observed in both series of samples. The grain size of the samples (28 to 46 μm) does not show any affect on the thermal and electrical properties. © (2012) Trans Tech Publications. 2018-02-28T23:58:31Z 2018-02-28T23:58:31Z 2012 http://dspace.uniten.edu.my/jspui/handle/123456789/9417 |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
Universiti Tenaga Nasional |
| building |
UNITEN Institutional Repository |
| collection |
Online Access |
| description |
We report the room temperature thermal conductivity κ and thermal diffusivity α of polycrystalline La 0.7Ca 0.3-xSr xMnO 3 for x = 0 to 0.1. The samples were prepared by heating at 1220 and 1320°C. The insulator-metal transition temperature, T IM and thermal diffusivity increased with Sr content. Phonon was the dominant contributor to thermal conductivity and the electronic contribution was less than 1%. Enhancement of electrical conductivity σ and thermal diffusivity for x ≥ 0.08 was observed in both series of samples. The grain size of the samples (28 to 46 μm) does not show any affect on the thermal and electrical properties. © (2012) Trans Tech Publications. |
| author |
Alwi, H.A. Ewe, L.S. Ibrahim, Z. Ibrahim, N.B. Abd-Shukor, R. |
| spellingShingle |
Alwi, H.A. Ewe, L.S. Ibrahim, Z. Ibrahim, N.B. Abd-Shukor, R. Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) |
| author_facet |
Alwi, H.A. Ewe, L.S. Ibrahim, Z. Ibrahim, N.B. Abd-Shukor, R. |
| author_sort |
Alwi, H.A. |
| title |
Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) |
| title_short |
Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) |
| title_full |
Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) |
| title_fullStr |
Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) |
| title_full_unstemmed |
Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10) |
| title_sort |
thermal diffusivity and conductivity of la 0.7ca 0.3-xsr xmno 3 (x= 0 to 0.10) |
| publishDate |
2018 |
| url |
http://dspace.uniten.edu.my/jspui/handle/123456789/9417 |
| first_indexed |
2018-09-05T08:12:35Z |
| last_indexed |
2018-09-05T08:12:35Z |
| _version_ |
1610754456466489344 |