Plastic deformation of LiNbO3 single crystals
- 1 January 1987
- journal article
- Published by EDP Sciences in Revue de Physique Appliquée
- Vol. 22 (11) , 1353-1359
- https://doi.org/10.1051/rphysap:0198700220110135300
Abstract
High temperature (> 0.8 TM) plastic deformation of ferroelectric monodomain LiNbO3 single crystals is reported. Different stress orientations have been chosen and basal, prismatic and pyramidal glide planes could be activated. A detailed analysis of the glide elements is made by means of optical, chemical etching and X-ray topography observations, as well as mechanical considerations (CRSS). The basal glide system (0001) with a CRSS of 13 MPa seems easier to activate than the prismatic glide system {1120} whose CRSS is 15 MPa, the pyramidal glide system {1102} with a CRSS of 17-18 MPa being the hardest to activateKeywords
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