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Title: Point-group sensitive orientation mapping of non-centrosymmetric crystals

We demonstrate polarity-sensitive orientation mapping of non-centrosymmetric phases by Electron Backscatter Diffraction (EBSD). The method overcomes the restrictions of kinematic orientation determination by EBSD, which is limited to the centro-symmetric Laue-groups according to Friedel's rule. Using polycrystalline GaP as an example, we apply a quantitative pattern matching approach based on simulations using the dynamical theory of electron diffraction. This procedure results in a distinct assignment of the local orientation according to the non-centrosymmetric point group of the crystal structure under investigation.
Authors:
 [1] ;  [2]
  1. Bruker Nano GmbH, Am Studio 2D, 12489 Berlin (Germany)
  2. BAM, Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin (Germany)
Publication Date:
OSTI Identifier:
22412652
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BACKSCATTERING; COMPUTERIZED SIMULATION; CRYSTAL STRUCTURE; ELECTRON DIFFRACTION; ELECTRONS; GALLIUM PHOSPHIDES; ORIENTATION; POLYCRYSTALS; SYMMETRY