Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages319-323
Number of pages5
Volume501
DOIs
Publication statusPublished - 2012
Event26th Regional Conference on Solid State Science and Technology, RCSSST 2011 - Seremban, Negeri Sembilan
Duration: 22 Nov 201124 Nov 2011

Publication series

NameAdvanced Materials Research
Volume501
ISSN (Print)10226680

Other

Other26th Regional Conference on Solid State Science and Technology, RCSSST 2011
CitySeremban, Negeri Sembilan
Period22/11/1124/11/11

Fingerprint

Thermal diffusivity
Thermal conductivity
Superconducting transition temperature
Electric properties
Thermodynamic properties
Heating
Metals
Temperature

Keywords

  • Manganites
  • Microstructure
  • Thermal diffusivity

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10). / Alwi, Hasan Adli; Ewe, L. S.; Ibarahim, Zahari; Ibrahim, Noor Baa`Yah; Abd. Shukor, Roslan.

Advanced Materials Research. Vol. 501 2012. p. 319-323 (Advanced Materials Research; Vol. 501).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Alwi, HA, Ewe, LS, Ibarahim, Z, Ibrahim, NBY & Abd. Shukor, R 2012, Thermal diffusivity and conductivity of La 0.7Ca 0.3-xSr xMnO 3 (x= 0 to 0.10). in Advanced Materials Research. vol. 501, Advanced Materials Research, vol. 501, pp. 319-323, 26th Regional Conference on Solid State Science and Technology, RCSSST 2011, Seremban, Negeri Sembilan, 22/11/11. https://doi.org/10.4028/www.scientific.net/AMR.501.319
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AU - Ibarahim, Zahari

AU - Ibrahim, Noor Baa`Yah

AU - Abd. Shukor, Roslan

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AB - 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.

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