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Elastic stiffness coefficients of thiourea from thermal diffuse scattering
Author(s) -
Büscher Julia,
Mirone Alessandro,
Stękiel Michał,
Spahr Dominik,
Morgenroth Wolfgang,
Haussühl Eiken,
Milman Victor,
Bosak Alexei,
Ivashko Oleh,
von Zimmermann Martin,
Dippel Ann-Christin,
Winkler Björn
Publication year - 2021
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576720016039
Subject(s) - brillouin spectroscopy , spectroscopy , photon , tensor (intrinsic definition) , opacity , scattering , elastic scattering , materials science , stiffness , brillouin scattering , molecular physics , thiourea , chemistry , atomic physics , optics , physics , laser , composite material , mathematics , organic chemistry , quantum mechanics , pure mathematics
The complete elastic stiffness tensor of thiourea has been determined from thermal diffuse scattering (TDS) using high‐energy photons (100 keV). Comparison with earlier data confirms a very good agreement of the tensor coefficients. In contrast with established methods to obtain elastic stiffness coefficients ( e.g. Brillouin spectroscopy, inelastic X‐ray or neutron scattering, ultrasound spectroscopy), their determination from TDS is faster, does not require large samples or intricate sample preparation, and is applicable to opaque crystals. Using high‐energy photons extends the applicability of the TDS‐based approach to organic compounds which would suffer from radiation damage at lower photon energies.