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(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.
keywords
MAGNETIC-PROPERTIES; BISMUTH FERRITE; BIFEO3 CERAMICS; MULTIFERROICS; SUBSTITUTION; SYSTEM; ND
subject category
Crystallography; Physics
authors
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
our authors
acknowledgements
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.