Point-group sensitive orientation mapping of non-centrosymmetric crystals

Journal Article · Mon Feb 16 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4907938· OSTI ID:22412652

Winkelmann, Aimo ^[1]; Nolze, Gert ^[2]

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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)

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.

• OSTI ID: 22412652
• Journal Information: Applied Physics Letters, Vol. 106, Issue 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BACKSCATTERING
COMPUTERIZED SIMULATION
CRYSTAL STRUCTURE
ELECTRON DIFFRACTION
ELECTRONS
GALLIUM PHOSPHIDES
ORIENTATION
POLYCRYSTALS
SYMMETRY