Magnetic resonance studies of Ar-ion irradiated rutile
https://doi.org/10.26907/mrsej-23102
Abstract
The point defects have been produced in the rutile structure by irradiation of a single crystalline (001)-TiO2 rutile platet wih 40 keV Ar+ ions. It is found that Ar-ion bombardment of rutile results in a large number of positively charged oxygen vacancies and, as a consequence, leads to a change in the valence of neighbouring Ti cations. Electron paramagnetic resonance (EPR) of Ar-ion irradiated TiO2 rutile is studied in detail. The analysis of angular and temperature dependences of EPR spectra makes it possible to conclude that EPR signals are associated with Ti3+ ions in the sixfold symmetric environment. In addition to the main signal from even titanium isotopes, eight equidistant weak lines are observed due to the hyperfine interaction typical for two titanium isotopes: 47Ti with a nuclear spin I=5/2 (natural abundance of 7.4%) and 49Ti with a nuclear spin I=7/2 (natural abundance of 5.4%). By comparing the g-tensor components with the reference data it is concluded that these Ti3+-based centers in Ar-ion implanted rutile were not described before.
Keywords
Supporting agencies: The study was supported by the Russian Science Foundation (project number 22-19-00712, https://rscf.ru/project/22-19-00712/)
About the Authors
A. A. Sukhanov
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan
V. F. Valeev
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan
V. I. Nuzhdin
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan
R. I. Khaibullin
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan
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Review
For citations:
Sukhanov A.A., Valeev V.F., Nuzhdin V.I., Khaibullin R.I. Magnetic resonance studies of Ar-ion irradiated rutile. Magnetic Resonance in Solids. 2023;25(1):23102(8 pp.). https://doi.org/10.26907/mrsej-23102
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