Thermal expansion behavior in TcO2. Toward breaking the Tc–Tc bond

Reynolds, EM; Zhang, Z; Avdeev, M; Thorogood, GJ; Poineau, F; Czerwinski, KR; Kimpton, JA; Kennedy, BJ

Thermal expansion behavior in TcO2. Toward breaking the Tc–Tc bond

Date

2017-07-24

Authors

Publisher

American Chemical Society

Abstract

The structure of TcO2 between 25 and 1000 °C has been determined in situ using X-ray powder diffraction methods and is found to remain monoclinic in space group P21/c. Thermal expansion in TcO2 is highly anisotropic, with negative thermal expansion of the b axis observed above 700 °C. This is the result of an anomalous expansion along the a axis that is a consequence of weakening of the Tc–Tc bonds. © 2017 American Chemical Society

Keywords

Thermal expansion, Oxides, Crystal lattices, Physical properties, Chemical properties, X-ray diffraction

Citation

Reynolds, E., Zhang, Z., Avdeev, M., Thorogood, G. J., Poineau, F., Czerwinski, K. R., Kimpton, J. A., & Kennedy, B. J. (2017). Thermal expansion behavior in TcO2. Toward breaking the Tc–Tc bond. Inorganic Chemistry, 56(15), 9219-9224. doi:10.1021/acs.inorgchem.7b01235