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dc.contributor.authorWang, Naigangen_US
dc.date.accessioned2014-03-14T20:40:57Z
dc.date.available2014-03-14T20:40:57Z
dc.date.issued2005-05-17en_US
dc.identifier.otheretd-07012005-173326en_US
dc.identifier.urihttp://hdl.handle.net/10919/33854
dc.description.abstractRecently, multiferroics-defined as materials with coexistence of at least two of the ferroelectric, ferroelastic and ferromagnetic effects-have attracted enormous research activities. In this thesis, the structure and properties of multiferrioic BiFeO3-x%PbTiO3 and Fe-x%Ga crystalline solutions were investigated. First, the results show that modified BiFeO3-PbTiO3 based ceramics have significantly enhanced multiferroic properties, relative to BiFeO3 single crystals. The data reveal: (i) a dramatic increase in the induced polarization; and (ii) the establishment of a remnant magnetization by a breaking of the translational invariance of a long-period cycloidal spin structure, via substituent effects. In addition, temperature dependent magnetic permeability investigations of BiFeO3-xPbTiO3 crystalline solutions have shown that aliovalent La substitution results in a significant increase in the permeability. Second, room temperature high-resolution neutron and x-ray diffraction studies have been performed on Fe-x%Ga crystals for 12en_US
dc.publisherVirginia Techen_US
dc.relation.haspartThesis-naigang-wang.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectMultiferroic; Bismuth ferrite; Iron gallium; Ferroen_US
dc.titleMultiferroic Bismuth Ferrite-Lead Titanate and Iron-Gallium Crystalline Solutions: Structure-Property Investigationsen_US
dc.typeThesisen_US
dc.contributor.departmentMaterials Science and Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMaterials Science and Engineeringen_US
dc.contributor.committeechairViehland, Dwight D.en_US
dc.contributor.committeememberReynolds, William T. Jr.en_US
dc.contributor.committeememberLi, Jie-Fangen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07012005-173326/en_US
dc.date.sdate2005-07-01en_US
dc.date.rdate2005-07-20
dc.date.adate2005-07-20en_US


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