Electrical and Structural Characterization of Ba(Y, Ta)$_{\mathrm{x}}$ Ti$_{\mathrm{1-2x}}$O$_{3}$ With x $=$ 0.025 and 0.05

ORAL

Abstract

Ba(Y, Ta)$_{\mathrm{x}}$ Ti$_{\mathrm{1-2x}}$O$_{3}$, with x $=$ 0.025 and 0.05, is investigated through temperature dependent electrical and structural characterization. The material is electrically characterized from 10Hz to 2 MHz for dielectric constant, tunability, dissipation factor and figure of merit over the temperature range -50 $^{\circ}$C to 125 $^{\circ}$C. In addition, lattice parameters and structural changes of the material are reported as a function of temperature as obtained using x-ray diffraction and Rietveld refinement. Properties of these electric-field tunable materials are discussed in terms of ferroelectrics, non-relaxor versus relaxor behavior, and a ferroelectric dipole-like glass state.

*This material is based upon work supported by, or in part by, the U.S. Army Research Laboratory ad the U.S. Army Research Office under contract/grant number W911NF-08-1-0353.

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Authors

  • Jerry Contreras

    • The University of Texas - Pan American, Department of Physics and Geology
    • The University of Texas Pan American
    • The University of Texas-Pan American
    • University of Texas-Pan American

  • Steven Tidrow

    • The University of Texas - Pan American, Department of Physics and Geology
    • The University of Texas-Pan American
    • University of Texas-Pan American

  • Daniel Potrepka

    • U.S. Army Research Lab
    • U.S. Army Research Laboratory

  • Frank Crowne

    • U.S. Army Research Lab
    • U.S. Army Research Laboratory

  • Arthur Tauber

    • Geo-Centers Inc.
    • Retired
    • Geo-Centers Inc