Metastable perovskite Bi1-xLaxFe0.5Sc0.5O3 phases in the range of the compositional crossover

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 compos...

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Detalhes bibliográficos
Autor principal: Salak, A. N. (author)
Outros Autores: Khalyavin, D. D. (author), Zamaraite, I. (author), Stanulis, A. (author), Kareiva, A. (author), Shilin, A. D. (author), Rubanik, V. V. (author), Radyush, Yu. V. (author), Pushkarev, A. V. (author), Olekhnovich, N. M. (author), Starykevich, M. (author), Grigalaitis, R. (author), Ivanov, M. (author), Banys, J. (author)
Formato: article
Idioma:eng
Publicado em: 2019
Assuntos:
Multiferroic
Metastable phase
Sol-gel method
High-pressure synthesis
Texto completo:http://hdl.handle.net/10773/25393
País:Portugal
Oai:oai:ria.ua.pt:10773/25393
Descrição
Resumo: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.

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