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Indexed by:Journal Papers

Date of Publication:2014-04-15

Journal:SCRIPTA MATERIALIA

Included Journals:SCIE、EI、Scopus

Volume:77

Page Number:56-59

ISSN No.:1359-6462

Key Words:Deformation; Maximum shear stress; TEM; Nanoindentation; Lithium niobate

Abstract:The hardness of X-, Y- and Z-cut lithium niobate (LiNbO3 or LN) is 12.8, 9.1 and 10.6 GPa, respectively. The pop-in phenomenon was observed for all loading experimental data of nanoindentation, which was induced by the formation of twins, confirmed using sub-nanometer scale transmission electron microscopy. The maximum shear stresses at pop-in for X-, Y- and Z-cut LN wafers are 20.6, 13.3 and 18.4 GPa, respectively, and the corresponding stresses are 25.5, 21 and 20 GPa. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.