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Filtering by: Creator Maglione, M. Remove constraint Creator: Maglione, M. Academic Affiliation Chemistry Remove constraint Academic Affiliation: Chemistry

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  • Dielectric and polarization experiments in high loss dielectrics: A word of caution

    Creator:
    Maglione, M. and Subramanian, M. A.
    Abstract:
    The recent quest for improved functional materials like high permittivity dielectrics and/or multiferroics has triggered an intense wave of research. Many materials have been checked for their dielectric permittivity or their polarization state. In this report, we call for caution when samples are simultaneously displaying an insulating behavior and a...
    Resource Type:
    Article
    Full Text:
    semicon- duction in CaCu3Ti4O12. 032902-2 M. Maglione and M. A. Subramanian Appl. Phys. Lett. 93, 032902

  • The Local Structure of Functional Electroceramics

    Creator:
    Culbertson, Charles M.
    Abstract:
    This work investigates the relationship between the local structure and physical properties of a set of classical (MgTiO3, CaTiO3, SrTiO3, and BaTiO3) and complex ((1-x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3[BZT-BCT], Na0.5Bi0.5TiO3 [NBT]) perovskite electroceramics. The materials in this work were synthesized via standard solid state ceramic synthesis, the structure was investigated through a number of...
    Resource Type:
    Dissertation
    Full Text:
    Absorption Fine Structure (EXAFS) from M. Blank, reproduced with permission under CC BY-SA 3.0

  • Structure-Property Relationships of Disordered Electronic Materials : From Crystalline to Amorphous

    Creator:
    Surta, Todd Wesley, Jr.
    Abstract:
    Two perovskite materials (Bi0.5(A)0.5)(Sc0.5Nb0.5)O3, where A = K+ and Na+ were synthesized phase pure for the first time. Their structures were determined by indexing synchrotron X-ray diffraction data and subsequent combined Rietveld refinement on neutron and synchrotron X-ray diffraction data revealing significant disorder on the A-sites of these materials. A...
    Resource Type:
    Dissertation
    Full Text:
    synchrotron XRD and NPD data for a) P4/mbm, b) Cmcm, c) Pbnm, d) Pbcm, and e) R3c, and f) P21/m