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Title: Metastable perovskite Bi1-xLaxFe0.5Sc0.5O3 phases in the range of the compositional crossover
Author: Salak, A. N.
Khalyavin, D. D.
Zamaraite, I.
Stanulis, A.
Kareiva, A.
Shilin, A. D.
Rubanik, V. V.
Radyush, Yu. V.
Pushkarev, A. V.
Olekhnovich, N. M.
Starykevich, M.
Grigalaitis, R.
Ivanov, M.
Banys, J.
Keywords: Multiferroic
Metastable phase
Sol-gel method
High-pressure synthesis
Issue Date: 2-Sep-2017
Publisher: Taylor & Francis
Abstract: Perovskite ceramics of the Bi1- xLaxFe0.5Sc0.5O3 composition (0.30 ≤ x ≤ 0.35) that cannot be sintered in bulk form as a single phase using the conventional ceramic route were successfully prepared using the high-pressure/high-temperature technique. It has been shown that the room-temperature compositional crossover from the antipolar phase whose incommensurate modulation of displacements of Bi/La and oxygen is described by the Imma(00γ)s00 superspace group to the non-polar Pnma phase occurs in the narrow range between x = 0.33 and x = 0.34 with no phase coexistence. The features of this compositional crossover are discussed in comparison with that observed in the Bi1- xLaxFeO3 system.
Peer review: yes
DOI: 10.1080/01411594.2017.1290802
ISSN: 0141-1594
Appears in Collections:CICECO - Artigos

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