Giant conductivity enhancement of ferrite insulators induced by atomic hydrogen.

Theory of isotope diffusion in a material with multiple species and its implications for hydrogen-enhanced electrical conductivity in olivine

0031-9201/$ see front matter 2013 Elsevier B.V. A http://dx.doi.org/10.1016/j.pepi.2013.03.001 E-mail address: [email protected] The relationship between isotope diffusion coefficient and electrical conductivity is examined for a material where a dominant charge-carrying atomic species (e.g., hydrogen) is present as various forms with different diffusion coefficients (e.g., two proton...

Giant Phonon Anharmonicity and Anomalous Pressure Dependence of Lattice Thermal Conductivity in Y2Si2O7 silicate

Modification of lattice thermal conductivity (κL) of a solid by means of hydrostatic pressure (P) has been a crucially interesting approach that targets a broad range of advanced materials from thermoelectrics and thermal insulators to minerals in mantle. Although it is well documented knowledge that thermal conductivity of bulk materials normally increase upon hydrostatic pressure, such positi...

1000-fold enhancement in proton conductivity of a MOF using post-synthetically anchored proton transporters

Pyridinol, a coordinating zwitter-ionic species serves as stoichiometrically loadable and non-leachable proton carrier. The partial replacement of the pyridinol by stronger hydrogen bonding, coordinating guest, ethylene glycol (EG), offers 1000-fold enhancement in conductivity (10(-6) to 10(-3) Scm(-1)) with record low activation energy (0.11 eV). Atomic modeling coupled with (13)C-SSNMR provid...

Charge transfer transitions in multiferroic BiFeO3 and related ferrite insulators

Abstract Submitted for the MAR11 Meeting of The American Physical Society Origin of colossal ionic conductivity in YSZ/STO multilayers

Submitted for the MAR11 Meeting of The American Physical Society Origin of colossal ionic conductivity in YSZ/STO multilayers TIMOTHY PENNYCOOK, MARK OXLEY, Vanderbilt Univ., Oak Ridge National Laboratory, MATTHEW BECK, Vanderbilt Univ., JAVIER GARCIABARRIOCANAL, FLAVIO BRUNO, CARLOS LEON, JACOBO SANTAMARIA, Complutense Univ., Madrid, MARIA VARELA, Oak Ridge National Laboratory, STEPHEN PENNYCO...