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Decomposition temperatures of Cu2Ln2O5 (Ln = Tb, Dy, Ho, Er, Tm, Yb, and Lu) compounds

Published online by Cambridge University Press:  03 March 2011

Tom Mathews  and
K.T. Jacob
Tom Mathews
Affiliation:
Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
K.T. Jacob*
Affiliation:
Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
*
a)Author to whom all correspondence should be addressed.
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Abstract

The equilibrium decomposition temperatures of Cu2Ln2O5 (Ln = Tb, Dy, Ho, Er, Tm, Yb, and Lu) compounds have been measured using a combined DTA-TGA apparatus under a flowing Ar + O2 gas mixture, in which the partial pressure of oxygen was controlled at 5.0 × 103 Pa. The Cu2Ln2O5 compounds yield Ln2O3 and Cu2O on decomposition. The decomposition temperature increases monotonically with the atomic number of the lanthanide element. This suggests that the stability of the Cu2Ln2O5 compounds with respect to the component binary oxides increases with decreasing radius of the Ln3+ ion.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 8 , Issue 12 , December 1993 , pp. 3015 - 3018
Copyright
Copyright © Materials Research Society 1993

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References

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