Structural features, magnetic and ferroelectric properties of SrFe10.8In1.2O19 compound
Turchenko V. Kostishin V.G. Trukhanov S. Damay F. Balasoiu M. Bozzo B. Fina I. Burkhovetsky V.V. Polosan S. Zdorovets M.V. Kozlovskiy A.L. Astapovich K.A. Trukhanov A.
June 2021Elsevier Ltd
Materials Research Bulletin
2021#138
The effect of temperature on the features of the crystal and magnetic structures, as well as the magnetic properties of the solid solution of SrFe10.8In1.2O19 hexaferrite was investigated. The appearance of ferroelectric properties was detected at room temperature, which contradicts the generally accepted opinion on the description of the crystal structure of hexaferrites within the framework of the centrosymmetric P63/mmc (No. 194) space group. The reasons of spontaneous polarization in solid solutions of hexaferrites remain controversial. No deviation from the collinear magnetic structure was found in the investigated temperature range from 1.5 to 350 K, while the thermal expansion of the unit cell was practically absent in the range from 1.5 to 50 K. The crystal structure of hexaferrites was considered in the framework of both centrosymmetric P63/mmc and non-centrosymmetric P63mc space groups, which allowed us to associate the emerging spontaneous polarization with unequal distortions of neighboring oxygen polyhedra.
hexaferrite , neutron diffraction , spontaneous polarization
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Joint Institute for Nuclear Research, 6 Joliot-Curie Str., Dubna, 141980, Russian Federation
South Ural State University, 76, Lenin Aven., Chelyabinsk, 454080, Russian Federation
Donetsk Institute of Physics and Technology named after O.O. Galkin of the NASU, 46 Nauki Ave, Kiev, 03680, Ukraine
National University of Science and Technology MISiS, Leninsky Prospekt, 4, Moscow, 119049, Russian Federation
SSPA “Scienti_c and Practical Materials Research Centre of NAS of Belarus“, 19 P. Brovki Str., Minsk, 220072, Belarus
Laboratoire Leon Brillouin, UMR12 CEA-CNRS, Bat. 563 CEA Saclay, Gif sur Yvette Cedex, 91191, France
Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest, Romania
Institut de Ciencia de Materials de Barcelona-CSIC, Campus de la UAB, Bellaterra, Barcelona, 08193, Spain
National Institute of Materials Physics, Bucharest, Magurele, Romania
Ural Federal University named after the First President of Russia B.N. Yeltsin, Yekaterinburg, Russian Federation
The Institute of Nuclear Physics of Republic of Kazakhstan, Nur-Sultan, Kazakhstan
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
Joint Institute for Nuclear Research
South Ural State University
Donetsk Institute of Physics and Technology named after O.O. Galkin of the NASU
National University of Science and Technology MISiS
SSPA “Scienti_c and Practical Materials Research Centre of NAS of Belarus“
Laboratoire Leon Brillouin
Horia Hulubei National Institute for Physics and Nuclear Engineering
Institut de Ciencia de Materials de Barcelona-CSIC
National Institute of Materials Physics
Ural Federal University named after the First President of Russia B.N. Yeltsin
The Institute of Nuclear Physics of Republic of Kazakhstan
L.N. Gumilyov Eurasian National University
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