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  1. No Access

    Article

    Evidence of a Order-Disorder Transition in the Crystalline Phase of Cd6Yb, 1/1 cubic approximant of icosahedral Cd5.7 Yb

    The electrical and thermal transport properties (electrical resistivity, thermopower, heat capacity and thermal conductivity) of the crystalline phase of the binary Cd6Yb system has been measured over a temperatu...

    N. Sorloaica, A. L. Pope, D. W. Winkler, Terry M. Tritt… in MRS Online Proceedings Library (2003)

  2. No Access

    Article

    When Does a Crystal Conduct Heat Like a Glass?

    Semiconducting crystalline materials that are poor conductors of heat are important as thermoelectric materials and for technological applications involving thermal management. In the present article neutron s...

    B. C. Sales, B. C. Chakoumakos, V. Keppens, R. **… in MRS Online Proceedings Library (2002)

  3. No Access

    Article

    Slater Transition in the Pyrochlore Cd2Os2O7

    Cd2Os2O7 crystallizes in the pyrochlore structure and undergoes a metal-insulator transition (MIT) near 226 K. Here we present resistivity, heat capacity, and magnetization results on Cd2Os2O7. Both single crysta...

    D. Mandrus, J. R. Thompson, L. M. Woods in MRS Online Proceedings Library (2001)

  4. No Access

    Article

    Connections between Crystallographic Data and New Thermoelectric Compounds

    New bulk thermoelectric compounds are normally discovered with the aid of simple qualitative structure-property relationships. Most good thermoelectric materials are narrow gap semiconductors composed of heavy...

    B. C. Sales, B. C. Chakoumakos, D. Mandrus in MRS Online Proceedings Library (2000)

  5. No Access

    Article

    Atomic Displacement Parameters: A Useful Tool in the Search for New Thermoelectric Materials?

    The atomic displacement parameters (ADPs) measure the mean-square displacement amplitude of an atom about its equilibrium position in a crystal. It is demonstrated that the ADPs can be used to identify crystal...

    B. C. Sales, B. C. Chakoumakos, D. Mandrus, J. W. Sharp… in MRS Online Proceedings Library (1998)

  6. No Access

    Article

    A Neutron Diffraction Study of Co2Ru1−xMnxO4 Spinels

    Powder neutron diffraction and magnetization measurements are presented on the Co2Ru1-xMnxO4 system. In these materials the tetrahedral (A) sites are occupied by Co2+ (S = 3/2) ions, and the octahedral (B) sites ...

    D. Mandrus, V. Keppens, B. C. Chakoumakos, G. E. Granroth… in MRS Online Proceedings Library (1998)

  7. No Access

    Article

    Chemical and Sonochemical Approaches to the Formation of VO2 Films and VO2-Impregnated Materials

    A new chemical and chemical/ultrasonic approach to the preparation of VO2 films and VO2-impregnated bulk materials has been developed. In this approach, a V2O5 sol prepared by quenching is used to coat SiO2 subst...

    V. Keppens, D. Mandrus, L. A. Boatner in MRS Online Proceedings Library (1997)

  8. No Access

    Article

    Filled Skutterudite Antimonides: Validation of the Electron-Crystal Phonon-Glass Approach to New Thermoelectric Materials

    After a brief review of the transport and thermoelectric properties of filled skutterudite antimonides, we present resonant ultrasound, specific heat, and inelastic neutron scattering results that establish th...

    D. Mandrus, B. C. Sales, V. Keppens, B. C. Chakoumakos… in MRS Online Proceedings Library (1997)

  9. No Access

    Article

    The Formation of Metal/Metal-Matrix Nanocomposites by the Ultrasonic Dispersion of Immiscible Liquid Metals

    Ultrasonic energy has been used to disperse one liquid metallic component in a second immiscible liquid metal, thereby producing a metallic emulsion. Upon lowering the temperature of this emulsion below the me...

    V. Keppens, D. Mandrus, J. Rankin, L. A. Boatner in MRS Online Proceedings Library (1996)