Abstract
Linear anisotropic elasticity has been applied to interpret the dislocation stability and ease of slip in wadsleyite. It is shown that wadsleyite is very isotropic from the elastic point of view. The influence of crystal chemistry and bonding on the choice of the slip plane is discussed. It is shown that slip is predominantly achieved on planes that do not shear Si–O bonds. It is suggested that dissociation of dislocations is essential in determining the ease of slip among the various slip systems.
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Received: 15 July 2002 / Accepted: 14 February 2003
Acknowledgements High-pressure experiments were performed at the Bayerisches Geoinstitut under the EU IHP – Access to Research Infrastructures Programme (Contract no. HPRI-1999-CT-00004 to D.C. Rubie). Enlightening discussions with A. Coujou and J. Rabier are gratefully acknowledged.
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Thurel, E., Douin, J. & Cordier, P. Plastic deformation of wadsleyite: III. Interpretation of dislocations and slip systems. Phys Chem Minerals 30, 271–279 (2003). https://doi.org/10.1007/s00269-003-0314-6
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DOI: https://doi.org/10.1007/s00269-003-0314-6