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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.
Shilin, A. D.
Rubanik, V. V.
Radyush, Yu. V.
Pushkarev, A. V.
Olekhnovich, N. M.
|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.|
|Appears in Collections:||CICECO - Artigos|
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