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Title: Zinc oxide based diluted magnetic semiconductor nanoparticles: Synthesis by laser ablation in liquids, microstructural and optical properties

Nanoparticles of ZnO and ZnO doped with transition metals (Mn, Co) were synthesized by laser ablation in liquid medium. Scanning electron microscopy (SEM) showed formation of nanostructures with different shapes. Atomic force microscopy (AFM) gives information about surface morphology of the formed nanostructures. Absorption edge of ZnO, ZnO:Mn and ZnO:Co colloidal nanoparticles exhibits blue shift due to confinement effect. In photoluminescence spectra three peaks are attributed to the band-edge transitions and defect states. The Faraday rotation in ZnO:Mn nanoparticles gives evidence for paramagnetic behavior at room temperature.
Authors:
; ; ; ; ;  [1] ;  [2]
  1. Department of Physics of Semiconductors and Nanostructures, Chernivtsi National University, 2 Kotsyubynsky Str., Chernivtsi 58012 (Ukraine)
  2. National Institute of Nuclear Physics, University of Salento, Physics Department, Lecce 73100 (Italy)
Publication Date:
OSTI Identifier:
22261890
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1566; Journal Issue: 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ATOMIC FORCE MICROSCOPY; DOPED MATERIALS; FARADAY EFFECT; LIQUIDS; MAGNETIC SEMICONDUCTORS; MICROSTRUCTURE; NANOSTRUCTURES; OPTICAL PROPERTIES; PARAMAGNETISM; PARTICLES; PHOTOLUMINESCENCE; SCANNING ELECTRON MICROSCOPY; SPECTRA; SYNTHESIS; TRANSITION ELEMENTS; ZINC OXIDES