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dc.contributor.advisorRao, C N R
dc.contributor.authorMurugavel, P
dc.date.accessioned2006-06-22T05:07:09Z
dc.date.accessioned2018-07-30T15:08:50Z
dc.date.available2006-06-22T05:07:09Z
dc.date.available2018-07-30T15:08:50Z
dc.date.issued2006-06-22T05:07:09Z
dc.date.submitted2000-07
dc.identifier.urihttp://etd.iisc.ac.in/handle/2005/217
dc.identifier.srnonull
dc.description.abstractThe thesis consists of two parts. Part 1 deals with the preparation of thin films and sub-micron powders of complex metal oxides by nebulized spray pyrolysis (NSP) and Part 2 consists of Brillouin scattering studies of solid materials exhibiting interesting phase transitions. The simple technique of NSP has been employed to prepare thin films of A12O3, PbTiO3, Pb(Zr0.5Ti0.5)O3 (PZT) and PbZrO3 on single crystal substrate. The films were characterized by various techniques for their composition, structure, morphology and dielectric properties. Ferroelectric (FE) films of the configuration FE/LaNiO3/SiO2/Si (FE = PbTiO3 and PZT), wherein the LaNiO3 barrier electrode was also deposited on the SiO2/Si substrate by NSP, have been investigated. The films exhibit satisfactory ferroelectric properties. PbZrO3 films deposited on LaNiO3/SiO2/Si substrates show good features, including a reversible AFE ↔ FE transition. Sub-micron particles of TiO2, ZrO2, Pb(Zr0.5Ti0.5)O3, Al2O3, S1O2 and mullite have been prepared by NSP and characterized by various techniques. Brillouin scattering has been used, for the first time, not only to characterize the Peierls transition but also the incommensurate to commensurate transition in the one-dimensional blue bronze, K0.3M0O3. The charge density wave transition in NbSe2 has also been investigated by Brillouin scattering. The charge ordering and antiferromag-netic transitions in single crystals of the rare earth manganates, Nd0.5Ca0.5MnO3 and Pr0.63Ca 0.37MnO3, have been investigated by Brillouin scattering. It is noteworthy that the temperature variation of the Brillouin shift and intensity parallel to that of the magnetization, thereby throwing light on magnetic excitations in charge-ordered state. Brillouin scattering investigations of C60 and C70 films have yielded values of the elastic moduli.en
dc.format.extent26093912 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherIndian Institute of Scienceen
dc.rightsI grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en
dc.subject.classificationMaterials Scienceen
dc.subject.keywordMetallic Oxidesen
dc.subject.keywordMetallic Filmsen
dc.subject.keywordPyrolysisen
dc.subject.keywordPhase Transformation (Statistical Physics)en
dc.subject.keywordVapour Depositionen
dc.subject.keywordThin Filmsen
dc.subject.keywordPulsed Laser Depositon(PLD)en
dc.subject.keywordMolecular Beam Epitaxy(MBE)en
dc.subject.keywordVapour Depositionen
dc.subject.keywordPhase Transitionsen
dc.subject.keywordNebulized Spray Pyrolysis (NSP)en
dc.subject.keywordThin Film Depositionen
dc.subject.keywordMetal Oxidesen
dc.titleThin Films And Sub-Micron Powders Of Complex Metal Oxides Prepared By Nebulized Spray Pyrolysis And Brillouin Scattering Investigations Of Phase Transitions In Solidsen
dc.typeElectronic Thesis and Dissertationen
dc.degree.namePhDen
dc.degree.levelDoctoralen
dc.degree.grantorIndian Institute of Scienceen
dc.degree.disciplineFaculty of Scienceen


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