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Fizika Tverdogo Tela, 2017 Volume 59, Issue 8, Pages 1576–1582 (Mi ftt9496)

This article is cited in 1 paper

Impurity centers

Submillimeter ESR spectra of Fe$^{2+}$ ions in synthetic and natural beryl crystals

G. S. Shakurova, R. I. Khaibullina, V. G. Tomasb, D. A. Fursenkob, R. I. Mashkovtsevb, O. N. Lopatinc, A. G. Nikolaevc, B. P. Gorshunovde, E. S. Zhukovade

a Zavoisky Physical Technical Institute, Kazan Scientific Center of the Russian Academy of Sciences
b Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
c Kazan (Volga Region) Federal University
d Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
e Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region

Abstract: Electron spin resonance spectra of non-Kramers bivalent iron (Fe$^{2+}$) ions have been detected in synthetic and natural beryl crystals with an iron impurity. The observed ESR spectra have been attributed to resonance transitions of Fe$^{2+}$ ions from the ground (singlet) state to excited (doublet) levels with the splitting $\Delta$ = 12.7 cm$^{-1}$ between the levels. The experimental angular and frequency dependences of the resonance field of the ESR signal have been described by the spin Hamiltonian with the effective spin $S$ = 1. The analysis of the ESR data and optical absorption spectra indicates that the Fe$^{2+}$ ions are situated in tetrahedral positions and substitute Be$^{2+}$ cations in the beryl structure.

Received: 14.02.2017

DOI: 10.21883/FTT.2017.08.44761.37


 English version:
Physics of the Solid State, 2017, 59:8, 1600–1606

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