Raman scattering yields cubic crystal grain orientation

0508004 - FZÚ 2020 RIV GB eng J - Journal Article
Tesař, Karel - Gregora, Ivan - Bérešová, Pavla - Vaněk, Přemysl - Ondrejkovič, Petr - Hlinka, Jiří
Raman scattering yields cubic crystal grain orientation.
Scientific Reports. Roč. 9, č. 1 (2019), s. 1-8, č. článku 9385. ISSN 2045-2322. E-ISSN 2045-2322
R&D Projects: GA ČR GC17-11494J
Institutional support: RVO:68378271
Keywords : magnets * domain walls * magnetic skyrmions
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.998, year: 2019
Method of publishing: Open access

The paper proposes a fully optical method for determination of a cubic crystal grain orientation in a sample inspected by a Raman microscope. The method is based on a universal and strong polarisation anisotropy of the Raman scattering by doubly degenerate optic phonon modes and it only requires a standard Raman microscope equipped with a polarisation analysis. Explicit formulas for the orientation of the crystal grain are derived. The feasibility of the approach is demonstrated by comparing grain orientations in a polycrystalline cubic lacunar spinel GaV4S8 determined independently using electron backscatter diffraction and Raman scattering methods.
Permanent Link: http://hdl.handle.net/11104/0298970