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

doi:10.1016/j.physb.2018.09.011

Thermal properties of La_0.7Ca_0.2Sr_0.1MnO₃:PdO composites

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

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

Abstract

A systematic study on the thermal conductivity, Seebeck coefﬁcient and specific heat of La_0.7Ca_0.2Sr_0.1MnO₃: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, T_C. 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 C_P(T) is analyzed to determine the entropy change (ΔS) during the magnetic phase transition.

Original language	English
Pages (from-to)	117-121
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	550
DOIs	https://doi.org/10.1016/j.physb.2018.09.011
Publication status	Published - 01-12-2018

All Science Journal Classification (ASJC) codes

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

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10.1016/j.physb.2018.09.011

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title = "Thermal properties of La0.7Ca0.2Sr0.1MnO3:PdO composites",

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.",

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doi = "10.1016/j.physb.2018.09.011",

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T1 - Thermal properties of La0.7Ca0.2Sr0.1MnO3:PdO composites

AU - Bhatt, Ramesh Chandra

AU - Manjunatha, S. O.

AU - Rao, Ashok

AU - Thomas, Riya

AU - Awana, V. P.S.

AU - Lin, C. F.

AU - Kuo, Y. K.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - 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.

AB - 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.

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

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Thermal properties of La_0.7Ca_0.2Sr_0.1MnO₃:PdO composites

Abstract

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