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Twinning and extended defects in hcp metals with large c / a ratio: modelling and microscopic observations
Author(s) -
Béré A.,
Braisaz T.,
Ruterana P.,
Nouet G.
Publication year - 2005
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200521252
Subject(s) - crystal twinning , hexagonal crystal system , stacking , bar (unit) , materials science , crystallography , axial ratio , condensed matter physics , chemistry , physics , microstructure , optics , organic chemistry , meteorology , circular polarization , microstrip
Abstract In hexagonal metals of largest c / a ratio, experimental observations hardly agree with the theoretical models of extended defects. For Zn and Cd, we have developed a semi‐empirical tight‐binding method to calculate the energy of extended defects. It was then possible to obtain a good correlation for polytypes or basal stacking faults. For the (10 $ \bar 1 $ 2) twin, two possible interfaces have been shown to be stable in agreement with the available experimental results for Zn. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)