Thermal properties of La0.7Ca0.2Sr0.1MnO3:PdO composites

Ramesh Chandra Bhatt, S. O. Manjunatha, Ashok Rao, Riya Thomas, V. P.S. Awana, C. F. Lin, Y. K. Kuo

Research output: Contribution to journalArticle

Abstract

A systematic study on the thermal conductivity, Seebeck coefficient and specific heat of La0.7Ca0.2Sr0.1MnO3:PdO composites is presented. Solid state reaction procedure was employed to synthesis the samples. It is seen from thermal conductivity (κ(T)) studies that the samples exhibit a slope change nature close to their corresponding magnetic phase transition temperature, TC. The overall magnitude of κ is observed to decrease with increasing Pd concentration. The analysis of Seebeck coefficient data, S(T) versus temperature, T was done using Mott's polaron hopping model reveals that the electron-magnon scattering is governing the low temperature region. The temperature dependent specific heat CP(T) is analyzed to determine the entropy change (ΔS) during the magnetic phase transition.

Original languageEnglish
Pages (from-to)117-121
Number of pages5
JournalPhysica B: Condensed Matter
Volume550
DOIs
Publication statusPublished - 01-12-2018

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Bhatt, R. C., Manjunatha, S. O., Rao, A., Thomas, R., Awana, V. P. S., Lin, C. F., & Kuo, Y. K. (2018). Thermal properties of La0.7Ca0.2Sr0.1MnO3:PdO composites. Physica B: Condensed Matter, 550, 117-121. https://doi.org/10.1016/j.physb.2018.09.011