Structural, optical and magnetic properties of Ni-doped ZnO micro-rods grown by the spray pyrolysis method

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YILMAZ Ş., McGlynn E., BACAKSIZ E., Cullen J., Chellappan R. K.

CHEMICAL PHYSICS LETTERS, pp.72-76, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume:
  • Publication Date: 2012
  • Doi Number: 10.1016/j.cplett.2012.01.003
  • Journal Name: CHEMICAL PHYSICS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.72-76
  • Karadeniz Technical University Affiliated: Yes

Abstract

Undoped and Ni-doped ZnO micro-rod arrays were successfully synthesized by the spray pyrolysis method on glass substrates. Analysis of the samples with X-ray diffraction and scanning electron microscopy showed that these micro-rod arrays had a polycrystalline wurtzite structure with a highly c-axis preferred orientation. Photoluminescence studies at both 300 and 10 K show that the incorporation of nickel leads to a relative increase in the visible blue light band intensity. Magnetic measurements indicated that Ni-doped ZnO samples exhibit ferromagnetic behavior at room temperature, which is possibly related to the presence of point defects. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.