Syntheses, Characterization, Functional Properties, and Structure-Property Relationships of New Mixed Metal Oxides
Lee, Hana 1984-
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Non-centrosymmetric (NCS) oxide materials are of significant interest because of their functional properties, for example, second-harmonic generating (SHG), piezoelectricity, ferroelectricity, and pyroelectricity. A number of design strategies have been discussed for creating NCS oxide materials. We have focused on using cations susceptible to second-order Jahn-Teller (SOJT) distortion. The distortion can occur in two different types of cations, d0 transition metals (Ti4+, V5+, Nb5+, Mo6+, etc.) and cations with stereoactive lone-pair (Se4+, Te4+, I5+, Tl+, Pb2+, etc.), and results in asymmetric coordination environments. In this dissertation, we report on the syntheses, crystal structures, characterization, functional properties, and their crystal structure-physical property relationships.