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Decomposition Temperatures of $Cu_2Ln_2O_5$ (Ln=Tb, Dy, Ho, Er, Tm, Yb, and Lu) Compounds

Mathews, Tom and Jacob, KT (1993) Decomposition Temperatures of $Cu_2Ln_2O_5$ (Ln=Tb, Dy, Ho, Er, Tm, Yb, and Lu) Compounds. In: Journal of Materials Research, 8 (12). pp. 3015-3018.

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Abstract

The equilibrium decomposition temperatures of $Cu_2Ln_2O_5$ (Ln=Tb, Dy, Ho, Er, Tm, Yb, and Lu) compounds have been measured using a combined DTA-TGA apparatus under a flowing $Ar + O_2$ gas mixture, in which the partial pressure of oxygen was controlled at $5.0*10^3 Pa$. The $Cu_2Ln_2O_5$ compounds yield $Ln_ 2O_3$ and $Cu_2O$ on decomposition. The decomposition temperature increases monotonically with the atomic number of the lanthanide element. This suggests that the stability of the $Cu_2Ln_2O_5$ compounds with respect to the component binary oxides increases with decreasing radius of the $Ln^{3+}$ ion.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Materials Research Society.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 28 Jun 2006
Last Modified: 06 Jan 2011 07:52
URI: http://eprints.iisc.ernet.in/id/eprint/7742

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