mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal University10.26907/mrsej-23301mrisel-86Research ArticleСтатьиMagnetic properties of the double perovskite Sr 2CoNbO 6-δPopovD. V.

Kazan 420029

BatulinR. G.

Kazan 420008

CherosovM. A.

Kazan 420008

YatsykI. V.

Kazan 420029

ChupakhinaT. I.

Ekaterinburg 620990

DeevaYu. A.

Ekaterinburg 620990

EreminaR. M.

Kazan 420029

REremina@yandex.ruMaitiT.

Department of Materials Science and Engineering

Kanpur 208016

Zavoisky Physical-Technical Institute, Federal Research Center "Kazan Scientific Center of RAS"Russian FederationKazan Federal UniversityRussian FederationInstitute of Solid State Chemistry of the RAS (UB)Russian FederationIndian Institute of TechnologyIndia20231801202425323301(9 pp.)Copyright © Popov D.V., Batulin R.G., Cherosov M.A., Yatsyk I.V., Chupakhina T.I., Deeva Y.A., Eremina R.M., Maiti T., 20242024Popov D.V., Batulin R.G., Cherosov M.A., Yatsyk I.V., Chupakhina T.I., Deeva Y.A., Eremina R.M., Maiti T.Popov D.V., Batulin R.G., Cherosov M.A., Yatsyk I.V., Chupakhina T.I., Deeva Y.A., Eremina R.M., Maiti T.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/86

Double perovskite Sr 2CoNbO 6-δ was obtained using a novel pyrolysis method involving nitrate-organic mixtures of the corresponding components and studied by means of XRF, magnetization-based, and EPR methods. The oxygen content equal to 5.4 was obtained from X-ray fluorescence analysis and magnetization data. The effective magnetic moment is 4.05μB per cell, that corresponds to the theoretical values. The phase transition to an ordered state in the temperature range of 5÷300 K was not detected. The antiferromagnetic nature of exchange interactions between the spins of cobalt ions is confirmed by the negative sign of the Curie-Weiss temperature Θ=-50 K obtained via fitting the inverse magnetic susceptibility. An exchange-narrowed line from cobalt ions is observed in the EPR spectrum in the temperature range of 5÷80 K. A sharp increase in the linewidth at 80 K is associated with the dynamic Jan-Teller effect

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