TY - JOUR
T1 - Electron paramagnetic resonance of a molecular defect in -irradiated IrO2 single crystals
AU - Yu, Jiang-Tsu
AU - Huang, Ying Sheng
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1989
Y1 - 1989
N2 - A very unique paramagnetic defect has been detected by electron paramagnetic resonance (EPR) in -ray irradiated IrO2 single crystals. The unpaired electrons of the defect species were observed to interact with a single Ir nucleus, and the magnetic symmetry is axial. The g? and the g values are very close to those known for Ir2+(5d7) in the low-spin state, but the Fermi contact contribution to the hyperfine splitting is much larger than usual. Moreover, the defect species was found to be preferentially oriented along the a axis (or the b axis, but not both) of the tetragonal rutile lattice. An [Ir-O]0 molecular defect is proposed to account for its EPR properties.
AB - A very unique paramagnetic defect has been detected by electron paramagnetic resonance (EPR) in -ray irradiated IrO2 single crystals. The unpaired electrons of the defect species were observed to interact with a single Ir nucleus, and the magnetic symmetry is axial. The g? and the g values are very close to those known for Ir2+(5d7) in the low-spin state, but the Fermi contact contribution to the hyperfine splitting is much larger than usual. Moreover, the defect species was found to be preferentially oriented along the a axis (or the b axis, but not both) of the tetragonal rutile lattice. An [Ir-O]0 molecular defect is proposed to account for its EPR properties.
UR - http://www.scopus.com/inward/record.url?scp=35949013599&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35949013599&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.40.4281
DO - 10.1103/PhysRevB.40.4281
M3 - Article
AN - SCOPUS:35949013599
VL - 40
SP - 4281
EP - 4288
JO - Physical Review B
JF - Physical Review B
SN - 0163-1829
IS - 7
ER -