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Magnetic Diagram of the High-Pressure Stabilized Multiferroic Perovskites of the BiFe1-yScyO3 Series / Elena L. Fertman; Alexey V. Fedorchenko; Erik Čižmár; Serhii Vorobiov; Alexander Feher; Yury V. Radyush; Anatoli V. Pushkarev; Nikolai M. Olekhnovich; Andrius Stanulis; Andrew Barron; Dmitry D. Khalyavin; Andrei N. Salak

Crystals, Volume: 10, Issue: 10, Start page: 950

Swansea University Author: Andrew, Barron

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DOI (Published version): 10.3390/cryst10100950

Abstract

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 phenomen...

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Published in: Crystals
ISSN: 2073-4352
Published: MDPI AG 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55513
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Abstract: 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.
Keywords: high-pressure synthesis; conversion polymorphism; oxygen octahedral tilting; G-type antiferromagnetic; weak ferromagnetism; collinear magnetic ground state
College: College of Engineering
Issue: 10
Start Page: 950