Strain induced phase separation on La0.5Ca0.5MnO3 thin films

Antonakos, A; Liarokapis, E; Aydogdu, GH; Habermeier, H-U

dc.contributor.author	Antonakos, A	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Aydogdu, GH	en
dc.contributor.author	Habermeier, H-U	en
dc.date.accessioned	2014-03-01T01:37:08Z
dc.date.available	2014-03-01T01:37:08Z
dc.date.issued	2011	en
dc.identifier.issn	0304-8853	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21459
dc.subject	Colossal magnetoresistance	en
dc.subject	Manganites thin films	en
dc.subject	Phase separation	en
dc.subject	Raman spectroscopy	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Antiferromagnetics	en
dc.subject.other	Bulk compounds	en
dc.subject.other	Charge-ordering	en
dc.subject.other	Epitaxial strain	en
dc.subject.other	Ferromagnetic metallic	en
dc.subject.other	Insulating state	en
dc.subject.other	Jahn-Teller	en
dc.subject.other	Low frequency	en
dc.subject.other	Low temperatures	en
dc.subject.other	Magneto transport properties	en
dc.subject.other	Orbital transition	en
dc.subject.other	Raman lines	en
dc.subject.other	Raman spectra	en
dc.subject.other	Resistivity measurement	en
dc.subject.other	SrLaAlO	en
dc.subject.other	SrTiO	en
dc.subject.other	Tilting angle	en
dc.subject.other	Transport and magnetic properties	en
dc.subject.other	Antiferromagnetism	en
dc.subject.other	Colossal magnetoresistance	en
dc.subject.other	Electric resistance	en
dc.subject.other	Epitaxial films	en
dc.subject.other	Magnetic field effects	en
dc.subject.other	Magnetic properties	en
dc.subject.other	Magnetoelectronics	en
dc.subject.other	Manganese oxide	en
dc.subject.other	Manganites	en
dc.subject.other	Raman scattering	en
dc.subject.other	Raman spectroscopy	en
dc.subject.other	Strain	en
dc.subject.other	Strontium alloys	en
dc.subject.other	Strontium compounds	en
dc.subject.other	Substrates	en
dc.subject.other	Transport properties	en
dc.subject.other	Vapor deposition	en
dc.subject.other	Phase separation	en
dc.title	Strain induced phase separation on La0.5Ca0.5MnO3 thin films	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jmmm.2010.10.030	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jmmm.2010.10.030	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The effect of epitaxial strain on La0.5Ca0.5MnO3 films of various thicknesses grown on SrTiO3, SrLaAlO4, and SrLaGaO4 substrates is studied by Raman spectroscopy, magnetic, and resistivity measurements. The transport and magnetic properties as well as Raman spectra of the films are affected by epitaxial strains. The energy of the A(g)(2) mode and the tilting angle of the MnO6 octahedra is affected by the strain imposed by the substrate. In the spectra of the films deposited on the (100) SrTiO3 substrate strong Jahn-Teller (JT) modes appear, which couple with charge-ordering. In all other films these modes are suppressed and no additional Raman lines are present at low temperatures contrary to the bulk compound. The low frequency continuum scattering decreases at low temperatures indicating a coupling with both the charge and orbital transitions. Comparison of the Raman spectra with the magneto-transport properties suggests an interpretation in terms of a strain induced phase separation between ferromagnetic metallic and antiferromagnetic insulating states. (C) 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Magnetism and Magnetic Materials	en
dc.identifier.doi	10.1016/j.jmmm.2010.10.030	en
dc.identifier.isi	ISI:000284626800046	en
dc.identifier.volume	323	en
dc.identifier.issue	5	en
dc.identifier.spage	620	en
dc.identifier.epage	630	en