Phase transitions and optical properties of Sr2SnO4

ORAL

Abstract

Layered perovskite Ruddlesden Popper (RP) transition metal oxides are interesting because of the effects of their 2 dimensional crystal structure on their lattice response, as well as electronic and optical properties. The Stannate Sr2SnO4 has the K2NiF4 type RP structure at high temperatures, but undergo multiple structural phase transitions as the temperature is lowered. In this talk, we present our first principles Density Functional Theory results that elucidate the mechanism behind these phase transitions. We discuss the details of the octahedral tilting and examine its effects on the electronic and optical properties of Sr2SnO4.

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Presenters

  • Nikolaos Memmos

    Department of Chemical Engineering and Materials Science, University of Minnesota

Authors

  • Nikolaos Memmos

    Department of Chemical Engineering and Materials Science, University of Minnesota

  • Turan Birol

    Department of Chemical Engineering and Material science, University of Minnesota, Chemical Engineering and Materials Science, University of Minnesota - Twin Cities, University of Minnesota, Department of Chemical Engineering and Materials Science, University of Minnesota, Department of Chemical Engineering and Materials Science, UNIVERSITY OF MINNESOTA