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Evidence for Instability in Pb1−xEuxTe Alloys

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Abstract

We have used transmission electron microscopy to study the structure of Pb1−xEuxTe alloys grown by molecular beam epitaxy. We have observed ordered solid solutions of the Pb1−xEuxTe alloys as well as spinodal decomposition for 0.35 ≤x<0.75. The spinodal decomposition corresponds to a modulation of both the composition and the lattice spacing of the Pb1−xEuxTe alloy. These modulated structures have periodicities of ~18Å along the <111> and <110> directions and indicate that the solid solution of Pb1−xEuxTe is unstable in this range of compositions.

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Acknowledgments

We acknowledge Sahn Nahm and Helaleh Maghsoudlou for preparing the samples for TEM.

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Authors and Affiliations

  1. Chemical and Nuclear Engineering Department, University of Maryland, College Park, MD, 20742

    L. Salamanca-Young & M. Wuttig

  2. General Motors Research Laboratories, Warren, MI, 48090-9055

    D. L. Partin & J. Heremans

Authors
  1. L. Salamanca-Young
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  2. M. Wuttig
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  3. D. L. Partin
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  4. J. Heremans
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Salamanca-Young, L., Wuttig, M., Partin, D.L. et al. Evidence for Instability in Pb1−xEuxTe Alloys. MRS Online Proceedings Library 103, 133–138 (1987). https://doi.org/10.1557/PROC-103-133

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  • DOI: https://doi.org/10.1557/PROC-103-133

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