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Predicted pyrochlore to fluorite disorder temperature for A2Zr2O7 compositions

  • M.J.D. Rushton (a1), Robin W. Grimes, C.R. Stanek (a2) and Scott Owens (a3)

Abstract

In a previous publication the order–disorder pyrochlore to fluorite transformation temperatures for a series of A2Hf2O7 pyrochlores were predicted [C.R. Stanek and R.W. Grimes: Prediction of rare-earth A2Hf2O7 pyrochlore phases. J. Am. Ceram. Soc. 2002, 85, p. 2139]. This was facilitated by establishing a relationship between these temperatures and the energy required to introduce a specific defect structure into the perfect pyrochlore lattice. Here an equivalent relationship for A2Zr2O7 pyrochlores was generated, and from this the disorder temperatures for a number of compositions including Eu2Zr2O7 were predicted.

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a)Address all correspondence to this author. e-mail: r.grimes@ic.ac.uk

References

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9Kiparisov, S.S., Belyaev, R.A., Belyakov, A.I., Kondarenko, V.V., Vyskubov, V.P., Kozlov, V.G., Kuznetsov, S.A. and Melikhova, L.P.: The phase diagram of the system Eu2O3-ZrO2. Inorg. Mater. 12, 1393 (1976).

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Predicted pyrochlore to fluorite disorder temperature for A2Zr2O7 compositions

  • M.J.D. Rushton (a1), Robin W. Grimes, C.R. Stanek (a2) and Scott Owens (a3)

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