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Title: Swift heavy ion irradiation of ZnO nanoparticles embedded in silica: Radiation-induced deoxidation and shape elongation

ZnO nanoparticles (NPs) embedded in amorphous SiO{sub 2} were irradiated with 200 MeV Xe{sup 14+} swift heavy ions (SHIs) to a fluence of 5.0 × 10{sup 13} ions/cm{sup 2}. Optical linear dichroism was induced in the samples by the irradiation, indicating shape transformation of the NPs from spheres to anisotropic ones. Transmission electron microscopy observations revealed that some NPs were elongated to prolate shapes; the elongated NPs consisted not of ZnO but of Zn metal. The SHI irradiation induced deoxidation of small ZnO NPs and successive shape elongation of the deoxidized metal NPs.
Authors:
; ; ;  [1] ; ;  [2] ; ; ;  [3] ;  [4]
  1. National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003 (Japan)
  2. Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki (Japan)
  3. Inter-University Accelerator Centre (IUAC), New Delhi (India)
  4. Guru Gobind Singh Indraprastha University, New Delhi (India)
Publication Date:
OSTI Identifier:
22217810
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AMORPHOUS STATE; ANISOTROPY; ELONGATION; HEAVY IONS; ION BEAMS; IRRADIATION; NANOSTRUCTURES; REDUCTION; SEMICONDUCTOR MATERIALS; SHAPE; SILICA; SILICON OXIDES; TRANSMISSION ELECTRON MICROSCOPY; ZINC OXIDES