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Open AccessArticle

Magnetic Diagram of the High-Pressure Stabilized Multiferroic Perovskites of the BiFe1-yScyO3 Series

by 1, 1, 2, 2, 2, 3, 3, 3, 4, 4,5,6, 7,* and 8,*
1
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine (NASU), Nauky 47, 61103 Kharkiv, Ukraine
2
Faculty of Sciences, Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia
3
Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus (NASB), P. Brovka 19, 220072 Minsk, Belarus
4
Energy Safety Research Institute (ESRI), Bay Campus, Swansea University, Fabian Way, Swansea SA1 8EN, UK
5
Department of Chemistry and Department of Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
6
Faculty of Engineering, Universiti Teknologi Brunei, Jalan Tungku Link, Gadong, Bandar Seri Begawan BE1410, Brunei
7
ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK
8
Department of Materials and Ceramics Engineering/CICECO-Aveiro Institute of Materials, University of 3810-193 Aveiro, Portugal
*
Authors to whom correspondence should be addressed.
Crystals 2020, 10(10), 950;
Received: 30 September 2020 / Revised: 15 October 2020 / Accepted: 16 October 2020 / Published: 17 October 2020
(This article belongs to the Special Issue Magnetіc Structure Compounds)
Magnetic properties of the high-pressure stabilized perovskite BiFe1-yScyO3 phases (0.1 ≤ y ≤ 0.9) have been studied by means of magnetization measurements and neutron diffraction. The metastable perovskites of this series undergo irreversible polymorphic transformations upon annealing, the phenomenon referred to as conversion polymorphism. It has been found that the solid solutions with y ≥ 0.70 exhibit no long-range magnetic ordering regardless of their polymorph modification, while those with y ≤ 0.60 are all antiferromagnets. Depending on the scandium content, temperature and structural distortions, three types of the antiferromagnetic orderings, involving collinear, canted and cycloidal spin arrangements, have been revealed in the phases obtained via conversion polymorphism and the corresponding magnetic phase diagram has been suggested. View Full-Text
Keywords: high-pressure synthesis; conversion polymorphism; oxygen octahedral tilting; G-type antiferromagnetic; weak ferromagnetism; collinear magnetic ground state high-pressure synthesis; conversion polymorphism; oxygen octahedral tilting; G-type antiferromagnetic; weak ferromagnetism; collinear magnetic ground state
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Fertman, E.L.; Fedorchenko, A.V.; Čižmár, E.; Vorobiov, S.; Feher, A.; Radyush, Y.V.; Pushkarev, A.V.; Olekhnovich, N.M.; Stanulis, A.; Barron, A.R.; Khalyavin, D.D.; Salak, A.N. Magnetic Diagram of the High-Pressure Stabilized Multiferroic Perovskites of the BiFe1-yScyO3 Series. Crystals 2020, 10, 950.

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