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, cilt.520, sa.16, ss.5172-5178, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 520 Sayı: 16
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.tsf.2012.04.002
  • Dergi Adı: THIN SOLID FILMS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.5172-5178
  • Anahtar Kelimeler: 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 Teknik Üniversitesi Adresli: Evet

Özet

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.