The optical and magnetic properties of CeO2 nanoparticles doped with Er3+ ions
https://doi.org/10.26907/mrsej-24211
Abstract
The EPR spectroscopy and magnetization measurements were used to study the effect of annealing conditions on the local structure of Er3+ ions in CeO2 : 1% Er3+ nanoparticles. The nanoparticles were synthesized using the coprecipitation technique from an aqueous solution of cerium nitrate and hexamethylenetetramine.
A correlation was found between the EPR spectra of the Er3+ ions, magnetization and luminescence, depending on the annealing atmosphere, which proved the crucial role of oxygen vacancies in the origin of magnetism in CeO2 nanoparticles.
EPR lines due to trigonal centers were clearly detected in CeO2 : 1% Er3+ nanoparticles annealed in a vacuum, while no such lines were found for similar nanoparticles annealed under argon or air atmospheres.
Supporting agencies: The work was funded by the grant from the Russian Science Foundation number 22-72-00129 https://rscf.ru/project/22-72-00129 The authors gratefully acknowledge the CSF-SAC FRC KSC RAS for providing necessary facilities to carry out optical measurements. The authors are grateful to R.G. Batulin and M.A. Cherosov for the help with magnetization measurements.
About the Authors
M. S. Pudovkin
Kazan State University
Russian Federation
Russian Federation
Kazan 420008
O. A. Morozov
Kazan State University; Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan 420008
Kazan 420029
S. L. Korableva
Kazan State University
Russian Federation
Russian Federation
Kazan 420008
R. M. Rakhmatullin
Kazan State University
Russian Federation
Russian Federation
Kazan 420008
V. V. Semashko
Kazan State University; Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan 420008
Kazan 420029
A. K. Ginkel
Kazan State University
Russian Federation
Russian Federation
Kazan 420008
A. A. Rodionov
Kazan State University
Russian Federation
Russian Federation
Kazan 420008
A. G. Kiiamov
Kazan State University; Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Kazan 420008
Kazan 420029
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Review
For citations:
Pudovkin M.S., Morozov O.A., Korableva S.L., Rakhmatullin R.M., Semashko V.V., Ginkel A.K., Rodionov A.A., Kiiamov A.G. The optical and magnetic properties of CeO2 nanoparticles doped with Er3+ ions. Magnetic Resonance in Solids. 2024;26(2):24211 (9 pp.). https://doi.org/10.26907/mrsej-24211
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