Dimer self-organization of 53Cr impurity ions in synthetic forsterite
https://doi.org/10.26907/mrsej-19402
Abstract
Paramagnetic centers formed by isotopically pure impurity 53Cr ions in synthetic forsterite (Mg2SiO4) are studied by continuous wave electron paramagnetic resonance. It is shown that chromium ions substitute magnesium ions as single ion with nonlocal charge compensation and dimer associate formed by two closely spaced Cr3+ ions. It is found that the integral intensity of resonance transitions belonging to the dimer associates is much higher than that to be expected for the statistical distribution of the impurity Cr3+ ions in the forsterite host. Therefore, there is a mechanism favoring the self-organization of the Cr3+ ions in dimer associates during the crystal growth.
About the Authors
A. S. Apreleva
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
A. A. Sukhanov
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Sibirsky tract 10/7, Kazan 420029
V. F. Tarasov
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Sibirsky tract 10/7, Kazan 420029
K. A. Subbotin
Prokhorov General Physics Institute, Russian Academy of Sciences; Mendeleev University of Chemical Technology
Russian Federation
Russian Federation
Vavilova 38, Moscow 119991; Miusskaya pl, Moscow 125047
E. V. Zharikov
Prokhorov General Physics Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
Vavilova 38, Moscow 119991
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Review
For citations:
Apreleva A.S., Sukhanov A.A., Tarasov V.F., Subbotin K.A., Zharikov E.V. Dimer self-organization of 53Cr impurity ions in synthetic forsterite. Magnetic Resonance in Solids. 2019;21(4):19402 (5 pp.). https://doi.org/10.26907/mrsej-19402
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