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EPR study of paramagnetic Fe 3+ centers in iron‐implanted TiO 2 rutile
Author(s) -
Güler S.,
Rameev B.,
Khaibullin R. I.,
Bayrakdar H.,
Aktaş B.
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200563119
Subject(s) - electron paramagnetic resonance , rutile , paramagnetism , ion , octahedron , orthorhombic crystal system , crystallography , materials science , spectral line , single crystal , chemistry , analytical chemistry (journal) , nuclear magnetic resonance , crystal structure , condensed matter physics , physics , organic chemistry , astronomy , chromatography
Abstract Single crystals of iron‐implanted TiO 2 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 Fe 3+ ions. Analysis of the EPR spectra shows that iron in TiO 2 rutile host substitutes for Ti 4+ ions. Two equivalent Fe 3+ 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 Fe 3+ centers have been obtained as a result of computer modelling. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)