Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 60, Issue SF, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.35848/1347-4065/ac148b
Keywords
ferroelectrics; coherent X-ray diffraction; 3D imaging
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Funding
- JSPS [JP19H02618, JP18H03850, JP18H05518, JP19H05819, JP19H05625, JP18H05517]
- Murata Science Foundation
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The improved Bragg coherent X-ray diffraction imaging (Bragg-CDI) apparatus allowed for the observation of the outer shape, size, and inner phase distribution for a single particle with a size of 40-500 nm.
We report the improvement of an apparatus for Bragg coherent X-ray diffraction imaging (Bragg-CDI) at BL22XU in SPring-8 to expand the applicable particle size and the application of the Bragg-CDI technique for Pd and ferroelectric barium titanate (BaTiO3) fine crystals with particle sizes of 40-500 nm. Preparing a vacuum environment around the sample enabled us to obtain the high-contrast diffraction pattern of a 40 nm particle. The reconstructed three-dimensional image showed the outer shape, size, and internal phase (strain) for a single particle. A single 500 nm BaTiO3 particle showed a straight and sharp antiphase-boundary shape, whereas smaller BaTiO3 particles showed different phase boundary shapes. The present Bragg-CDI apparatus, thus, allows the observation of the outer shape, size, and inner phase distribution for a single particle with a size of 40-500 nm.
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