TY - JOUR
A1 - Hinterstein, Manuel
A1 - Lemos da Silva, Lucas
A1 - Knapp, Michael
A1 - Schoekel, Alexander
A1 - Etter, Martin
A1 - Studer, Andrew
T1 - In situ neutron diffraction for analysing complex coarse‐grained functional materials
Y1 - 2023-08-01
VL - 56
IS - 4
SP - 1242
EP - 1251
JF - Journal of Applied Crystallography
DO - 10.1107/S1600576723005940
PB - International Union of Crystallography
N2 - Complex functional materials play a crucial role in a broad range of energy‐related applications and in general for materials science. Revealing the structural mechanisms is challenging due to highly correlated coexisting phases and microstructures, especially for in situ or operando investigations. Since the grain sizes influence the properties, these microstructural features further complicate investigations at synchrotrons due to the limitations of illuminated sample volumes. In this study, it is demonstrated that such complex functional materials with highly correlated coexisting phases can be investigated under in situ conditions with neutron diffraction. For large grain sizes, these experiments are valuable methods to reveal the structural mechanisms. For an example of in situ experiments on barium titanate with an applied electric field, details of the electric‐field‐induced phase transformation depending on grain size and frequency are revealed. The results uncover the strain mechanisms in barium titanate and elucidate the complex interplay of stresses in relation to grain sizes as well as domain‐wall densities and mobilities.
N2 - This work reports in situ neutron diffraction experiments on a broad range of grain sizes of barium titanate. The study reveals the grain‐size‐dependent strain mechanisms and shows the competitiveness of neutron diffraction with high‐resolution synchrotron diffraction. image
UR - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11102
ER -