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Precipitation (exsolution) in garnet-type oxide

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Abstract

The exsolution process of magnetite in a garnet matrix is described. The intragranular nucleation of magnetite in substituted yttrium iron garnets is characterized by a transitional event. Magnetite nucleates in the centre of zones which constitute a transitional phase fully coherent with the matrix. An ionic process model is proposed for this transitional event. This model is in good agreement with the experimental data obtained in electron microscopy. It is shown that the activation energy barrier is lower for nucleation via a transitional phase.

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References

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Author notes

  1. J. Y. Laval

    Present address: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California, USA

Authors and Affiliations

  1. Laboratoire d'Etude et de Synthése des Microstructures, Centre National de la Recherche Scientifique, Ecole Supérieure de Physique et de Chimie Industrielle, 10 rue Vauquelin, 75231, Paris, Cedex 05, France

    J. Y. Laval

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  1. J. Y. Laval
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Laval, J.Y. Precipitation (exsolution) in garnet-type oxide. J Mater Sci 13, 1937–1942 (1978). https://doi.org/10.1007/BF00552900

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  • DOI: https://doi.org/10.1007/BF00552900

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