Three-Dimensional GaN-Ga{sub 2}O{sub 3} Core Shell Structure Revealed by X-Ray Diffraction Microscopy
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, California 90095 (United States)
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan (China)
- SPring-8/RIKEN, 1-1-1, Kouto, Mikazuki, Sayo-gun, Hyogo 679-5198 (Japan)
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616 (United States)
In combination of direct phase retrieval of coherent x-ray diffraction patterns with a novel tomographic reconstruction algorithm, we, for the first time, carried out quantitative 3D imaging of a heat-treated GaN particle with each voxel corresponding to 17x17x17 nm{sup 3}. We observed the platelet structure of GaN and the formation of small islands on the surface of the platelets, and successfully captured the internal GaN-Ga{sub 2}O{sub 3} core shell structure in three dimensions. This work opens the door for nondestructive and quantitative imaging of 3D morphology and 3D internal structure of a wide range of materials at the nanometer scale resolution that are amorphous or possess only short-range atomic organization.
- OSTI ID:
- 20861402
- Journal Information:
- Physical Review Letters, Vol. 97, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.97.215503; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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