A structure, conductivity and dielectric properties investigation of A3CoNb2O9 (A = Ca2+, Sr2+, Ba2+) triple perovskites
The room temperature structures as well as the temperature-dependent conductivity and dielectric properties of the A 3CoNb 2O 9 (A=Ca 2+, Sr 2+ and Ba 2+) triple perovskites have been carefully investigated. A constrained modulation wave approach to Rietveld structure refinement is used to determine their room temperature crystal structures. Correlations between these crystal structures and their physical properties are found. All three compounds undergo insulator to semiconductor phase...[Show more]
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|Source:||Journal of Solid State Chemistry|
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