A new oxytelluride: Perovskite and CsCl intergrowth in Ba 3Yb2O5Te
The new oxytelluride Ba3Yb2O5Te was obtained from an alkaline earth flux. Ba3Yb2O 5Te crystallizes in the tetragonal space group P4/mmm (#123), with a=4.3615(3)Å and c=11.7596(11)Å, Z = 1. The structure combines two distinct building blocks, a Ba2Yb2O5 perovskite-like double layer with square bipyramidal coordination of the ytterbium ions, and a CsCl-type BaTe layer. Short range magnetic order is apparent at below 5 K, with the magnetic behavior above this temperature dominated by crystal field effects. The structure may be considered as an analog to the Ruddlesden-Popper phases, where the NaCl-type layer has been replaced by the CsCl-type layer. The two-dimensional magnetic behavior is expected based on the highly anisotropic nature of the structure. © 2013 Elsevier Inc. All rights reserved.
Flux crystal growth, Oxytelluride, Perovskite, Single crystal, Synthesis
Whalen, J. B., T. Besara, R. Vasquez, F. Herrera, J. Sun, D. Ramirez, R. L. Stillwell et al. "A new oxytelluride: Perovskite and CsCl intergrowth in Ba3Yb2O5Te." Journal of Solid State Chemistry 203 (2013): 204-211.
Journal of Solid State Chemistry