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

Abstract

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

Citation Formats

Winkelmann, Aimo, E-mail: aimo.winkelmann@bruker.com, and Nolze, Gert, E-mail: gert.nolze@bam.de. Point-group sensitive orientation mapping of non-centrosymmetric crystals. United States: N. p., 2015. Web. doi:10.1063/1.4907938.
Winkelmann, Aimo, E-mail: aimo.winkelmann@bruker.com, & Nolze, Gert, E-mail: gert.nolze@bam.de. Point-group sensitive orientation mapping of non-centrosymmetric crystals. United States. doi:10.1063/1.4907938.
Winkelmann, Aimo, E-mail: aimo.winkelmann@bruker.com, and Nolze, Gert, E-mail: gert.nolze@bam.de. Mon . "Point-group sensitive orientation mapping of non-centrosymmetric crystals". United States. doi:10.1063/1.4907938.
@article{osti_22412652,
title = {Point-group sensitive orientation mapping of non-centrosymmetric crystals},
author = {Winkelmann, Aimo, E-mail: aimo.winkelmann@bruker.com and Nolze, Gert, E-mail: gert.nolze@bam.de},
abstractNote = {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.},
doi = {10.1063/1.4907938},
journal = {Applied Physics Letters},
number = 7,
volume = 106,
place = {United States},
year = {Mon Feb 16 00:00:00 EST 2015},
month = {Mon Feb 16 00:00:00 EST 2015}
}