Structural, electrical, magnetic and thermal properties of Gd1-xSrxMnO3 (0.2≤x≤0.5) manganites

Nagaraja B.s; Ashok Rao; P. D. Babu; G. S. Okram

doi:10.1016/j.physb.2015.09.025

Structural, electrical, magnetic and thermal properties of Gd_1-xSr_xMnO₃ (0.2≤x≤0.5) manganites

Nagaraja B.s
, Ashok Rao^*
, P. D. Babu
, G. S. Okram

^*Corresponding author for this work

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

32 Citations (Scopus)

Abstract

A systematic study on structural, electrical, magnetic and thermoelectric properties of bulk samples of Gd_1-xSr_xMnO₃, synthesized by solid state reaction, is carried out in this communication. All the samples are in single phase with no detectable impurities. All the samples exhibit insulating behavior and the results indicate that high temperature electrical resistivity can be explained using small polaron hopping (SPH) model, whereas variable hopping model (VRH) model is valid in the low temperature regime. The magnetization results show that large irreversible magnetization is observed at low temperatures. The thermoelectric power measurement demonstrates that these samples exhibit colossal thermoelectric power.

Original language	English
Pages (from-to)	10-20
Number of pages	11
Journal	Physica B: Condensed Matter
Volume	479
DOIs	https://doi.org/10.1016/j.physb.2015.09.025
Publication status	Published - 15-12-2015

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.2015.09.025

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title = "Structural, electrical, magnetic and thermal properties of Gd1-xSrxMnO3 (0.2≤x≤0.5) manganites",

abstract = "A systematic study on structural, electrical, magnetic and thermoelectric properties of bulk samples of Gd1-xSrxMnO3, synthesized by solid state reaction, is carried out in this communication. All the samples are in single phase with no detectable impurities. All the samples exhibit insulating behavior and the results indicate that high temperature electrical resistivity can be explained using small polaron hopping (SPH) model, whereas variable hopping model (VRH) model is valid in the low temperature regime. The magnetization results show that large irreversible magnetization is observed at low temperatures. The thermoelectric power measurement demonstrates that these samples exhibit colossal thermoelectric power.",

author = "Nagaraja B.s and Ashok Rao and Babu, \{P. D.\} and Okram, \{G. S.\}",

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doi = "10.1016/j.physb.2015.09.025",

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journal = "Physica B: Condensed Matter",

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T1 - Structural, electrical, magnetic and thermal properties of Gd1-xSrxMnO3 (0.2≤x≤0.5) manganites

AU - B.s, Nagaraja

AU - Rao, Ashok

AU - Babu, P. D.

AU - Okram, G. S.

PY - 2015/12/15

Y1 - 2015/12/15

N2 - A systematic study on structural, electrical, magnetic and thermoelectric properties of bulk samples of Gd1-xSrxMnO3, synthesized by solid state reaction, is carried out in this communication. All the samples are in single phase with no detectable impurities. All the samples exhibit insulating behavior and the results indicate that high temperature electrical resistivity can be explained using small polaron hopping (SPH) model, whereas variable hopping model (VRH) model is valid in the low temperature regime. The magnetization results show that large irreversible magnetization is observed at low temperatures. The thermoelectric power measurement demonstrates that these samples exhibit colossal thermoelectric power.

AB - A systematic study on structural, electrical, magnetic and thermoelectric properties of bulk samples of Gd1-xSrxMnO3, synthesized by solid state reaction, is carried out in this communication. All the samples are in single phase with no detectable impurities. All the samples exhibit insulating behavior and the results indicate that high temperature electrical resistivity can be explained using small polaron hopping (SPH) model, whereas variable hopping model (VRH) model is valid in the low temperature regime. The magnetization results show that large irreversible magnetization is observed at low temperatures. The thermoelectric power measurement demonstrates that these samples exhibit colossal thermoelectric power.

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SN - 0921-4526

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EP - 20

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Structural, electrical, magnetic and thermal properties of Gd_1-xSr_xMnO₃ (0.2≤x≤0.5) manganites

Abstract

All Science Journal Classification (ASJC) codes

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