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(00 gamma)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.
palavras-chave
MAGNETIC-PROPERTIES; BISMUTH FERRITE; BIFEO3 CERAMICS; MULTIFERROICS; SUBSTITUTION; SYSTEM; ND
categoria
Crystallography; Physics
autores
Salak, AN; Khalyavin, DD; Zamaraite, I; Stanulis, A; Kareiva, A; Shilin, AD; Rubanik, VV; Radyush, YV; Pushkarev, AV; Olekhnovich, NM; Starykevich, M; Grigalaitis, R; Ivanov, M; Banys, J
nossos autores
Andrei Salak
Investigador Principal
Maksim Starykevich
Investigador Júnioragradecimentos
This work was supported by project TUMOCS. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie [grant agreement number 645660]. Financial support of the Belarusian Republican Foundation for Fundamental Research [project number T15VT-008] is gratefully acknowledged as well.