Published 2015 | Version v1
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Resistivity and magnetoresistance properties in polycrystalline Gd0.7Ca0.3Mn1-xCrxO3 (x=0.0-0.5)

Creators

  • 1. Department of Physics, University of Kalyani, Nadia (India)
  • 2. Department of Engineering Physics, B.P. Poddar Institute of Management and Technology, Kolkata (India)

Description

The resistivity and magnetoresistance (MR) of polycrystalline Gd0.7Ca0.3Mn1-xCrxO3 (x=0.0-0.5) have been investigated. The composites crystallize in orthorhombic structure with Pnma space group. The XRD studies indicate a change of structural differences with variation of doping concentration of Cr. In this work, we have tried to observe the characteristics of temperature dependent resistivity and magnetoresistance properties. The temperature dependent electrical resistivity (ρ) fulfills the Arrhenius like relation ρ)/T =pα exp (Eρ)/KBT) with activation energy (Ep) =156.4, 143.78, 147.06, 144.98, 144.06, 158.58 MeV respectively for Gd0.7Ca0.3Mn1-xCrxO3 (x=0.0, 0.1, 0.2, 0.3, 0.4, 0.5). The magneto-resistance (MR) also vary with doping concentration of Cr and reaches -16.30%, - 18.80%, - 17.11 %, - 12.82%, - 11.28% Gd0.7Ca0.3Mn1-xCrxO3 (x=0.0, 0.1, 0.2, 0.4, 0.5). (author)

Part of:
Proceedings of fourth international conference on current developments in atomic, molecular, optical and nano-physics with applications

Additional details

Publishing Information

Publisher
University of Delhi
Imprint Place
New Delhi (India)
Imprint Title
Proceedings of fourth international conference on current developments in atomic, molecular, optical and nano-physics with applications
Imprint Pagination
145 p.
Journal Page Range
p. 108

Conference

Title
4. international conference on current developments in atomic, molecular, optical and nano-physics with applications
Acronym
CDAMOP-2015
Dates
11-14 Mar 2015
Place
New Delhi (India)

INIS

Country of Publication
India
Country of Input or Organization
India
INIS RN
47058370
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
DOPED MATERIALS; GADOLINIUM OXIDES; MAGNETORESISTANCE; ORTHORHOMBIC LATTICES; SPACE GROUPS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION
Descriptors DEC
CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; GADOLINIUM COMPOUNDS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; SYMMETRY GROUPS; THREE-DIMENSIONAL LATTICES

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