Elastic stiffness coefficients of thiourea from thermal diffuse scattering

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
DOI: https://doi.org/10.1107/S1600576720016039
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8471
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, 2021: Elastic stiffness coefficients of thiourea from thermal diffuse scattering. In: Journal of Applied Crystallography, Band 54, 1: 287 - 294, DOI: 10.1107/S1600576720016039.
 
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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.
 
The elastic stiffness coefficients of thiourea are determined from thermal diffuse scattering. image
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thermal diffuse scattering
elastic stiffness
thiourea
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