Wideband EPR-spectroscopy of Y3Al5O12:Er3+, (Y0.9Lu0.1)3Al5O12:Er3+ and Y3Al5O12:Fe2+ crystals
https://doi.org/10.26907/mrsej-19403
Abstract
Using an X-band EPR spectrometer and a submillimeter EPR spectrometer, Y3Al5O12 (YAG), (Y0.9Lu0.1)3Al5O12 (YLuAG) crystals with erbium and YAG with iron were investigated. In YAG:Er crystals the resonance transitions between ground and the first excited doublets in the frequency range 580-750 GHz were observed. The energy interval to the first excited Stark level is measured and the direction of the axes of the g-tensor of the excited doublet is specified. The field-frequency and angular dependences of these transitions are measured and theoretically calculated. In the YAG:Fe crystal a non-Kramers ion was detected in the frequency range 112-150 GHz. It was concluded that resonant transitions between the |+2⟩ ↔ |−2⟩ states of the Fe2+ ion in the tetrahedral environment are observed.
About the Authors
H. R. Asatryan
Ioffe Physical-Technical Institute of RAS
Russian Federation
Russian Federation
Politekhnicheskaya 26, St. Petersburg 194021
G. S. Shakurov
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Sibirsky trakt 10/7, Kazan 420029
A. G. Petrosyan
Institute for Physical Research, National Academy of Sciences of Armenia
Armenia
Armenia
Ashtarak-2 0203
K. L. Hovannesyan
Institute for Physical Research, National Academy of Sciences of Armenia
Armenia
Armenia
Ashtarak-2 0203
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For citations:
Asatryan H.R., Shakurov G.S., Petrosyan A.G., Hovannesyan K.L. Wideband EPR-spectroscopy of Y3Al5O12:Er3+, (Y0.9Lu0.1)3Al5O12:Er3+ and Y3Al5O12:Fe2+ crystals. Magnetic Resonance in Solids. 2019;21(4):19403 (7 pp.). https://doi.org/10.26907/mrsej-19403
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