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dc.contributor.authorSarwar, Tuba
dc.contributor.authorQamar, Afzaal
dc.contributor.authorNadeem, Muhammad
dc.date.accessioned2018-07-04T00:57:54Z
dc.date.available2018-07-04T00:57:54Z
dc.date.issued2015
dc.identifier.issn03048853
dc.identifier.doi10.1016/j.jmmm.2014.09.066
dc.identifier.urihttp://hdl.handle.net/10072/170290
dc.description.abstractIn this work, structural and electrical properties of Y0.5Ca0.5MnO3 are investigated by employing X-ray diffraction and impedance spectroscopy, respectively. Applied ac electric field showed the charge ordering transition temperature around 265K and below this temperature the heteromorphic behavior of the sample is discussed in the proximity of TCO. With frequency effects the volume of robust charge orbital ordering (COO) domains diminishes due to different competing phases along with Jahn Teller distortions. Comprehensive melting and collapse of charge orbital ordering occurs below TN(125K), where a colossal drop in the value of impedance is observed. The change in profile of modulus plane plots determines the spreading of relaxation time of intermingled phases. Hopping mechanism is elaborated in terms of strong electron phonon coupling. Variable range hopping model and Arrhenius model are used to discuss the short and long range hopping between Mn3+ and Mn4+ channels assessing the activation energy Ea.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.relation.ispartofpagefrom227
dc.relation.ispartofpageto233
dc.relation.ispartofjournalJournal of Magnetism and Magnetic Materials
dc.relation.ispartofvolume375
dc.subject.fieldofresearchElectronic and Magnetic Properties of Condensed Matter; Superconductivity
dc.subject.fieldofresearchCondensed Matter Physics
dc.subject.fieldofresearchMaterials Engineering
dc.subject.fieldofresearchMechanical Engineering
dc.subject.fieldofresearchcode020404
dc.subject.fieldofresearchcode0204
dc.subject.fieldofresearchcode0912
dc.subject.fieldofresearchcode0913
dc.titleFrequency effects on charge ordering in Y0.5Ca0.5MnO3 by impedance spectroscopy
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorQamar, Afzaal


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