Ba2TeO: A new layered oxytelluride

Authors

T. BesaraFollow
D. Ramirez
J. Sun
J. B. Whalen
T. D. Tokumoto
S. A. McGill
D. J. Singh
T. Siegrist

Abstract

Single crystals of the new semiconducting oxytelluride phase, Ba2TeO, were synthesized from barium oxide powder and elemental tellurium in a molten barium metal flux. Ba2TeO crystallizes in tetragonal symmetry with space group P4/nmm (#129), a=5.0337(1) Å, c=9.9437(4) Å, Z=2. The crystals were characterized by single crystal x-ray diffraction, heat capacity and optical measurements. The optical measurements along with electronic band structure calculations indicate semiconductor behavior with a band gap of 2.93 eV. Resistivity measurements show that Ba2TeO is highly insulating.

Document Type

Article

DOI

https://doi.org/10.1016/j.jssc.2014.11.003

Keywords

oxytelluride, single crystal growth, single crystal x-ray diffraction, layered structure, semiconductor

Publication Date

2015

Recommended Citation

Besara, T., D. Ramirez, J. Sun, J. B. Whalen, T. D. Tokumoto, S. A. McGill, D. J. Singh, and T. Siegrist. "Ba2TeO: A new layered oxytelluride." Journal of Solid State Chemistry 222 (2015): 60-65.

Journal Title

Journal of Solid State Chemistry