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Journal Article

Be-stabilized polymorph of MoSi2

MPS-Authors
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Milosavljević,  Milica D.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Burkhardt,  Ulrich
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Leithe-Jasper,  Andreas
Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126541

Borrmann,  Horst
Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Milosavljević, M. D., Burkhardt, U., Leithe-Jasper, A., Grin, Y., & Borrmann, H. (2021). Be-stabilized polymorph of MoSi2. Journal of Alloys and Compounds, 890: 161420, pp. 1-6. doi:10.1016/j.jallcom.2021.161420.


Cite as: https://hdl.handle.net/21.11116/0000-0009-B30C-0
Abstract
As a quite unique case a high-temperature modification was previously described for the well-known MoSi2. A detailed reinvestigation, however, proves that even minute amounts of beryllium trigger the formation of a hexagonal CrSi2-type phase rather than the established tetragonal prototype. This ternary MoSi2-xBex is stable at ambient conditions and very likely resembles the high-temperature polymorph of MoSi2. With the help of powder X-ray diffraction, electron backscatter diffraction and energy-dispersive X-ray spectroscopy analyses it was concluded that beryllium replaces silicon atoms in the crystal structure, and that the Be/Si network may contain vacancies. (C) 2021 Published by Elsevier B.V.