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Open AccessArticle

High Entropy Oxide Phases with Perovskite Structure

1
Material science and physics&chemistry of materials, South Ural State University (National Research University), 454080 Chelyabinsk, Russia
2
Moscow Institute of Physics and Technology (State University), 141701 Dolgoprudny, Russia
3
Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia
4
Amirkhanov Institute of Physics Daghestan Scientific Center, Russian Academy of Sciences, 360015 Makhachkala, Russia
5
Voronezh State Technical University, 394000 Voronezh, Russia
6
Voronezh State University, 394036 Voronezh, Russia
7
National University of Science and Technology “MISIS”, 119049 Moscow, Russia
8
Scientific and Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(2), 268; https://doi.org/10.3390/nano10020268
Received: 11 January 2020 / Revised: 23 January 2020 / Accepted: 3 February 2020 / Published: 5 February 2020
(This article belongs to the Special Issue Functional Nanomagnetics and Magneto-Optical Nanomaterials)
The possibility of the formation of high entropy single-phase perovskites using solid-state sintering was investigated. The BaO–SrO–CaO–MgO–PbO–TiO2, BaO–SrO–CaO–MgO–PbO–Fe2O3 and Na2O–K2O–CaO–La2O3–Ce2O3–TiO2 oxide systems were investigated. The optimal synthesis temperature is found between 1150 and 1400 °C, at which the microcrystalline single phase with perovskite structure was produced. The morphology, chemical composition, crystal parameters and dielectric properties were studied and compared with that of pure BaTiO3. According to the EDX data, the single-phase product has a formula of Na0.30K0.07Ca0.24La0.18Ce0.21TiO3 and a cubic structure.
Keywords: phase equilibria; multicomponent oxides; high entropy phases; perovskite; solid-phase sintering phase equilibria; multicomponent oxides; high entropy phases; perovskite; solid-phase sintering
MDPI and ACS Style

Vinnik, D.A.; Trofimov, E.A.; Zhivulin, V.E.; Gudkova, S.A.; Zaitseva, O.V.; Zherebtsov, D.A.; Starikov, A.Y.; Sherstyuk, D.P.; Amirov, A.A.; Kalgin, A.V.; Trukhanov, S.V.; Podgornov, F.V. High Entropy Oxide Phases with Perovskite Structure. Nanomaterials 2020, 10, 268.

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