EPR study of paramagnetic Fe3+ centers in iron-implanted TiO2 rutile


Güler S., Rameev B., Khaibullin R., BAYRAKDAR H. , Aktaş B.

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, cilt.203, ss.1533-1538, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 203 Konu: 7
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1002/pssa.200563119
  • Dergi Adı: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
  • Sayfa Sayıları: ss.1533-1538

Özet

Single crystals of iron-implanted TiO2 rutile have been investigated by the electron paramagnetic resonance (EPR) technique at room temperature. The spectra have been interpreted to correspond to the transitions among the spin multiplet (S = 5/2, L = 0) of the paramagnetic Fe3+ ions. Analysis of the EPR spectra shows that iron in TiO2 rutile host substitutes for Ti4+ ions. Two equivalent Fe3+ centers have been observed in the EPR spectra in correspondence with two equivalent octahedral positions of the Ti ions in the rutile structure. Parameters of the crystal field of orthorhombic symmetry on the Fe3+ centers have been obtained as a result of computer modelling. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.