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Twinning Mechanism in PrCo2Cx Magnetic Phase

Published online by Cambridge University Press:  10 February 2011

Lijun Wu ,
Weimin Bian  and
Yimei Zhu
Lijun Wu
Affiliation:
Department of Applied Science, Brookhaven National Laboratory, Upton, NY 11973
Weimin Bian
Affiliation:
Department of Applied Science, Brookhaven National Laboratory, Upton, NY 11973
Yimei Zhu
Affiliation:
Department of Applied Science, Brookhaven National Laboratory, Upton, NY 11973
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Abstract

A magnetic rhombohedral PrCo2Cx (x=0.05∼0.25) phase (space group R3m), which is heavily twinned along the {110} and {211} planes, was identified. The twinning mechanism was explored by analyzing the reduction of crystal symmetry due to the cubic-rhombohedral phase transformation. The origin of the twinning and the formation of four twin variants were attributed to the insertion of carbon interstitials into Co4 tetrahedrons along the 3 axis in the rhombohedral lattice, which corresponds to one of the four equivalent <111> axes of its parent PrCo2 cubic-lattice.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 472: Symposium I – Polycrystalline Thin Films - Structure, Texture, Properties..III , 1997 , 149
Copyright
Copyright © Materials Research Society 1997

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References

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