Halasyamani, P. Shiv2017-07-172017-07-17August 2012014-08August 201Portions of this document appear in: Kim, Sun Woo, Sang-Hwan Kim, P. Shiv Halasyamani, Mark A. Green, Kanwal Preet Bhatti, C. Leighton, Hena Das, and Craig J. Fennie. "RbFe 2+ Fe 3+ F 6: Synthesis, structure, and characterization of a new charge-ordered magnetically frustrated pyrochlore-related mixed-metal fluoride." Chemical Science 3, no. 3 (2012): 741-751. DOI: 10.1039/C2SC00765Ghttp://hdl.handle.net/10657/1897Mixed-metal fluoride materials are of significant interest attributable to their important physical properties such as magnetic frustration, multiferroicity, ferroelectricity, magnetoelectricity, and non-linear optical behavior. Although a variety of synthetic strategies are known, it still remains a challenge to synthesize new mixed metal fluoride materials. The aim of this research was to synthesize new multiferroic mixed metal fluoride materials, especially materials containing mixed valence ion (Fe2+/Fe3+, Mn2+/Mn3+) with geometrical or magnetic frustration and investigate the possibility of electronic ferroelectricity or magnetic ferroelectricity as well as their functional properties. In this dissertation, I report on the hydrothermal syntheses, crystal structures, characterizations, and physical properties, and their structure-property relationships in new mixed-metal fluorides.application/pdfengThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. UH Libraries has secured permission to reproduce any and all previously published materials contained in the work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).FluorideMixed ValenceCrystal structuresStructure-property relationships2017-07-17Thesisborn digital