Sodium cobaltates: crystal growth, structure, thermoelectricity, and superconductivity

Authors

C T Lin, Max-Planck-Institute For Solid State Research
Dapeng Chen, University of WollongongFollow
A Maljuk, Max Planck Institute For Solid State Research
P Lemmens, Max Planck Institute For Solid State Research

RIS ID

41364

Publication Details

Lin, C., Chen, D. P., Maljuk, A. & Lemmens, P. (2006). Sodium cobaltates: crystal growth, structure, thermoelectricity, and superconductivity. Journal of Crystal Growth, 292 (2), 422-428.

Abstract

A systematic study of growing NaxCoO2 (x=0.55–1.00) and NaxCoO2yH2O (x=0.26–0.42, y=1.3) single crystals has been performed to determine phase stability and the effect of hydration on the structural and magnetic properties of this system. Our experiments demonstrate that nearly pure α- (x=0.90–1.00) and α′- (x=0.75) phase of NaxCoO2crystals could be obtained using the optical floating zone method, while other phases with lower sodium content of x