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Title: Hydrothermal synthesis and magnetic properties of CuO hollow microspheres

Graphical abstract: - Highlights: • CuO hollow microspheres were synthesized through hydrothermal route. • The possible growth mechanism was proposed according to the experimental results. • CuO hollow microspheres show an anomalous ferromagnetic behavior at 5 K and 300 K. - Abstract: In the present work, CuO hollow microspheres with the diameter about 2 μm were successfully synthesized through a facile hydrothermal method. The phase purity, morphologies and structure features of the as obtained products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy, respectively. It was found that reaction temperature, reaction time and different volume ratios of ethanol and distilled water played important roles on the morphologies of the obtained CuO hollow microspheres. The possible formation mechanism was also proposed according to the corresponding experimental results. The magnetic properties were investigated by superconducting quantum interference device, revealing that the CuO hollow microspheres exhibited an anomalous ferromagnetic behavior at 5 K and 300 K. At the same time, the origin of the ferromagnetism in CuO hollow microspheres was also discussed.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huai’an 223300 (China)
  2. (China)
  3. School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai’an 223300 (China)
  4. College of Physics and Electronic Information, Luoyang Normal University, Luoyang 471022 (China)
Publication Date:
OSTI Identifier:
22341821
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 49; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COPPER OXIDES; FERROMAGNETISM; HYDROTHERMAL SYNTHESIS; MAGNETIC PROPERTIES; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; X-RAY DIFFRACTION