Structural, optical and magnetic properties of Zn1-xMnxO micro-rod arrays synthesized by spray pyrolysis method

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YILMAZ Ş., BACAKSIZ E., McGlynn E., POLAT İ., ÖZCAN Ş.

THIN SOLID FILMS, vol.520, no.16, pp.5172-5178, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 520 Issue: 16
  • Publication Date: 2012
  • Doi Number: 10.1016/j.tsf.2012.04.002
  • Journal Name: THIN SOLID FILMS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5172-5178
  • Keywords: Doped zinc oxide, Manganese, Microrods, Photoluminescence, Ferromagnetism, Spray pyrolysis, MN-DOPED ZNO, HIGH-TEMPERATURE FERROMAGNETISM, THIN-FILMS, SUBSTRATE-TEMPERATURE, ROOM-TEMPERATURE, MICROSTRUCTURE, FABRICATION, SPECTRA, DESIGN, BULK
  • Karadeniz Technical University Affiliated: Yes

Abstract

Undoped and Mn-doped ZnO micro-rod arrays were fabricated by the spray pyrolysis method on glass substrates. X-ray diffraction and scanning electron microscopy showed that these micro-rod arrays had a polycrystalline wurtzite structure and high c-axis preferred orientation. Photoluminescence studies at 10K show that the increase of manganese content leads to a relative decrease in deep level band intensity with respect to undoped ZnO. Magnetic measurements indicated that undoped ZnO was diamagnetic in nature whereas Mn-doped ZnO samples exhibited ferromagnetic behavior at room temperature, which is possibly related to the substitution of Mn ions (Mn2+) for Zn ions in the ZnO lattice. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.