mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal University10.26907/mrsej-19402mrisel-64Research ArticleСтатьиDimer self-organization of 53Cr impurity ions in synthetic forsteriteAprelevaA. S.

Kremlevskaya 18, Kazan 420008

SukhanovA. A.

Sibirsky tract 10/7, Kazan 420029

TarasovV. F.

Sibirsky tract 10/7, Kazan 420029

tarasov@kfti.knc.ruSubbotinK. A.

Vavilova 38, Moscow 119991; Miusskaya pl, Moscow 125047

ZharikovE. V.

Vavilova 38, Moscow 119991

Kazan Federal UniversityRussian FederationZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RASRussian FederationProkhorov General Physics Institute, Russian Academy of Sciences; Mendeleev University of Chemical TechnologyRussian FederationProkhorov General Physics Institute, Russian Academy of SciencesRussian Federation201906062019214SPECIAL ISSUE dedicated to Boris Z. Malkin's 80th birthday19402 (5 pp.)Copyright © Apreleva A.S., Sukhanov A.A., Tarasov V.F., Subbotin K.A., Zharikov E.V., 20242024Apreleva A.S., Sukhanov A.A., Tarasov V.F., Subbotin K.A., Zharikov E.V.Apreleva A.S., Sukhanov A.A., Tarasov V.F., Subbotin K.A., Zharikov E.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/64

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.

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The authors declare that there are no conflicts of interest present.