Crystal Structure, Dielectric and Thermophysical Properties of Multiferroics BiFeO3/REE
The effects of the modification of bismuth ferrite by various rare earth elements (REE) are considered: the results of the investigation of the influence of crystal-physical parameters of stoichiometrically introduced dopants on the form of the phase diag
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Crystal Structure, Dielectric and Thermophysical Properties of Multiferroics BiFeO3/REE S. V. Khasbulatov, L. A. Shilkina, S. I. Dudkina, A. A. Pavelko, K. P. Andryushin, S. N. Kallaev, G. G. Gadjiev, Z. M. Omarov, M.-R. M. Magomedov, A. G. Bakmaev, I. A. Verbenko and L. A. Reznichenko
Abstract The effects of the modification of bismuth ferrite by various rare earth elements (REE) are considered: the results of the investigation of the influence of crystal-physical parameters of stoichiometrically introduced dopants on the form of the phase diagrams of Bi1−xREExFeO3 systems, the grain structure of ceramics, the dielectric spectra and thermal properties of samples over a wide range of temperatures are presented.
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Introduction
In the next 10–15 years, the priorities of scientific and technological development of the leading countries of the world will be those areas that will allow to obtain scientific and technical results and create technologies that are the base for innovative development of the market of products and services, and also provide a transition to digital, technologies, new materials and methods of their design, to the creation of systems for storing, processing, transferring and reliable protection of information arrays, to environmentally friendly technologies and energy harvesting devices. Among these materials, multiferroics are the most promising and attractive, representing an extensive class of materials combining ferroelectric, ferromagnetic S. V. Khasbulatov (&) L. A. Shilkina S. I. Dudkina A. A. Pavelko K. P. Andryushin I. A. Verbenko L. A. Reznichenko Research Institute of Physics, Southern Federal University, Rostov-on-Don 344090, Russia e-mail: [email protected] S. N. Kallaev G. G. Gadjiev Z. M. Omarov M.-R. M. Magomedov A. G. Bakmaev H.I. Amirkhanov Institute of Physics of Daghestanian Scientific Center of the Russian Academy of Sciences, Makhachkala 367010, Russia © Springer Nature Switzerland AG 2019 I. A. Parinov et al. (eds.), Advanced Materials, Springer Proceedings in Physics 224, https://doi.org/10.1007/978-3-030-19894-7_23
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and ferroelastic properties with the potential for use in new devices based on mutual control of magnetic and electric fields [1]: magnetic field sensors, information recording/reading devices, in spintronics, artificial intelligence systems, quantum heavy-duty computers, etc. At the same time, among them the most vocal is the bismuth ferrite, BiFeO3, (BFO), which does not contain toxic elements and has high electrical temperatures (Curie temperature, TC * 1083 K) and magnetic ordering (Néel temperature, TN * 643 K), can be described as possible [2]. From the fundamental point of view, bismuth ferrite and its solid solutions are interesting in view of the strong interrelation of the crystal structure with magnetic and electrical properties, which is possible only under the condition of suppression of the spatially modulated magnetic (spin) structure of the cycloid type, characteristic of BiFeO3. Th
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