Percolative nature of A-site disordered La0.75Ca0.25-xSrxMnO3 manganites

R. Venkatesh; Sankararao  Yadam; D. Venkateshwarlu; S. Shanmukharao  Samatham; Nini Pryds; Christian R.H. Bahl

doi:10.1016/j.matchemphys.2015.10.060

Percolative nature of A-site disordered La_0.75Ca_0.25-xSr_xMnO₃ manganites

R. Venkatesh
, Sankararao Yadam
, D. Venkateshwarlu
, S. Shanmukharao Samatham
, Nini Pryds
, Christian R.H. Bahl

Department of Energy Conversion and Storage

University Grant Commission, New Delhi

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Magnetic, resistive, and magnetoresistance measurements were used to investigate the percolative nature of A-site disordered La_0.75Ca_0.25-xSrxMnO₃(x = 0, 0.10) manganites. La_0.75Ca_0.15Sr_0.10MnO₃ has an orthorhombic structure and second order magnetic phase transition indicates the presence of two prominent downturns T* and T_ferro above the Curie temperature (T_C) in the derivative of the inverse susceptibility measurements. These observations are in agreement with the percolation model and the results are discussed in the light of phase separation happening in small polarons present in the insulating phase. © 2015 Elsevier B.V. All rights reserved.

Original language	English
Journal	Materials Chemistry and Physics
Volume	168
Pages (from-to)	74-78
ISSN	0254-0584
DOIs	https://doi.org/10.1016/j.matchemphys.2015.10.060
Publication status	Published - 2015

Keywords

Ceramics
Oxides
Magnetometer
Electrical conductivity
Magnetic properties

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10.1016/j.matchemphys.2015.10.060

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Cite this

@article{e7fb881cf84445498229300a1ba91a67,

title = "Percolative nature of A-site disordered La0.75Ca0.25-xSrxMnO3 manganites",

abstract = "Magnetic, resistive, and magnetoresistance measurements were used to investigate the percolative nature of A-site disordered La0.75Ca0.25-xSrxMnO3(x = 0, 0.10) manganites. La0.75Ca0.15Sr0.10MnO3 has an orthorhombic structure and second order magnetic phase transition indicates the presence of two prominent downturns T* and Tferro above the Curie temperature (TC) in the derivative of the inverse susceptibility measurements. These observations are in agreement with the percolation model and the results are discussed in the light of phase separation happening in small polarons present in the insulating phase. {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

keywords = "Ceramics, Oxides, Magnetometer, Electrical conductivity, Magnetic properties",

author = "R. Venkatesh and Sankararao Yadam and D. Venkateshwarlu and Samatham, \{S. Shanmukharao\} and Nini Pryds and Bahl, \{Christian R.H.\}",

year = "2015",

doi = "10.1016/j.matchemphys.2015.10.060",

language = "English",

volume = "168",

pages = "74--78",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier",

}

TY - JOUR

T1 - Percolative nature of A-site disordered La0.75Ca0.25-xSrxMnO3 manganites

AU - Venkatesh, R.

AU - Yadam, Sankararao

AU - Venkateshwarlu, D.

AU - Samatham, S. Shanmukharao

AU - Pryds, Nini

AU - Bahl, Christian R.H.

PY - 2015

Y1 - 2015

N2 - Magnetic, resistive, and magnetoresistance measurements were used to investigate the percolative nature of A-site disordered La0.75Ca0.25-xSrxMnO3(x = 0, 0.10) manganites. La0.75Ca0.15Sr0.10MnO3 has an orthorhombic structure and second order magnetic phase transition indicates the presence of two prominent downturns T* and Tferro above the Curie temperature (TC) in the derivative of the inverse susceptibility measurements. These observations are in agreement with the percolation model and the results are discussed in the light of phase separation happening in small polarons present in the insulating phase. © 2015 Elsevier B.V. All rights reserved.

AB - Magnetic, resistive, and magnetoresistance measurements were used to investigate the percolative nature of A-site disordered La0.75Ca0.25-xSrxMnO3(x = 0, 0.10) manganites. La0.75Ca0.15Sr0.10MnO3 has an orthorhombic structure and second order magnetic phase transition indicates the presence of two prominent downturns T* and Tferro above the Curie temperature (TC) in the derivative of the inverse susceptibility measurements. These observations are in agreement with the percolation model and the results are discussed in the light of phase separation happening in small polarons present in the insulating phase. © 2015 Elsevier B.V. All rights reserved.

KW - Ceramics

KW - Oxides

KW - Magnetometer

KW - Electrical conductivity

KW - Magnetic properties

U2 - 10.1016/j.matchemphys.2015.10.060

DO - 10.1016/j.matchemphys.2015.10.060

M3 - Journal article

SN - 0254-0584

VL - 168

SP - 74

EP - 78

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

ER -