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Small‐Angle Neutron Scattering from Anisotropic Single‐Crystalline Materials
Author(s) -
Sequeira A. D.,
Kostorz G.,
Pedersen J. S.
Publication year - 1997
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/s0021889897001805
Subject(s) - reciprocal lattice , scattering , anisotropy , isotropy , materials science , biological small angle scattering , small angle neutron scattering , computational physics , azimuth , optics , transmission electron microscopy , neutron scattering , small angle scattering , crystallography , molecular physics , physics , diffraction , chemistry
`Isotropic' small‐angle scattering (SAS), i.e . without azimuthal dependence around the primary beam, occurs only for specific configurations of the scattering objects if single‐crystalline material is studied. For decomposing Ni‐based alloy single crystals, SAS signals are generally highly anisotropic. From analysis of two‐dimensional SAS patterns, important information on the evolution of the morphology and on the three‐dimensional spatial arrangement of the precipitates from the early stages of decomposition can be extracted. The real‐space information obtained from transmission electron microscopy is an excellent complement to the reciprocal‐space information extracted from SAS data. The complementary use of these two techniques offers a valuable approach to the study of precipitation phenomena.