Defect-induced room temperature ferromagnetism in B-doped ZnO


Yilmaz S., Nisar J., Atasoy Y., McGlynn E., Ahuja R., PARLAK M. , et al.

CERAMICS INTERNATIONAL, cilt.39, ss.4609-4617, 2013 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 39 Konu: 4
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.ceramint.2012.11.060
  • Dergi Adı: CERAMICS INTERNATIONAL
  • Sayfa Sayısı: ss.4609-4617

Özet

ZnO microrods were grown on glass substrates by the spray pyrolysis method and boron was doped into the ZnO microrods by diffusion. X-ray diffraction results confirmed that the incorporation of B leads to a slight reduction in the deposit texture. Scanning electron microscopy measurements showed that the morphology of the ZnO samples changed from a microrod to nanocrystalline structure with B-doping. Photoluminescence data indicate that B-doping leads to a relative increase of the unstructured green band intensity. Magnetic measurements revealed that B-doped ZnO samples exhibited room temperature ferromagnetism related to defects, in agreement with first principles theoretical calculations. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.