Magnetic properties of the double perovskite Sr 2CoNbO 6-δ
https://doi.org/10.26907/mrsej-23301
Abstract
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
Supporting agencies: This research was supported by the Russian Science Foundation (Project No. 22-42-02014) and DST Project number DST/INT/RUS/RSF/P-55/2021
About the Authors
D. V. Popov
Zavoisky Physical-Technical Institute, Federal Research Center "Kazan Scientific Center of RAS"
Russian Federation
Russian Federation
Kazan 420029
R. G. Batulin
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
M. A. Cherosov
Kazan Federal University
Russian Federation
Russian Federation
Kazan 420008
I. V. Yatsyk
Zavoisky Physical-Technical Institute, Federal Research Center "Kazan Scientific Center of RAS"
Russian Federation
Russian Federation
Kazan 420029
T. I. Chupakhina
Institute of Solid State Chemistry of the RAS (UB)
Russian Federation
Russian Federation
Ekaterinburg 620990
Yu. A. Deeva
Institute of Solid State Chemistry of the RAS (UB)
Russian Federation
Russian Federation
Ekaterinburg 620990
R. M. Eremina
Zavoisky Physical-Technical Institute, Federal Research Center "Kazan Scientific Center of RAS"
Russian Federation
Russian Federation
Kazan 420029
T. Maiti
Indian Institute of Technology
India
India
Department of Materials Science and Engineering
Kanpur 208016
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Review
For citations:
Popov D.V., Batulin R.G., Cherosov M.A., Yatsyk I.V., Chupakhina T.I., Deeva Yu.A., Eremina R.M., Maiti T. Magnetic properties of the double perovskite Sr 2CoNbO 6-δ. Magnetic Resonance in Solids. 2023;25(3):23301(9 pp.). https://doi.org/10.26907/mrsej-23301
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