A combined theoretical and experimental study of the phase coexistence and morphotropic boundaries in ferroelectric-antiferroelectric-antiferrodistortive multiferroics
authors Morozovska, AN; Karpinsky, DV; Alikin, DO; Abramov, A; Eliseev, EA; Glinchuk, MD; Yaremkevich, AD; Fesenko, OM; Tsebrienko, TV; Pakalniskis, A; Kareiva, A; Silibin, MV; Sidski, VV; Kalinin, SV; Kholkin, AL
nationality International
journal ACTA MATERIALIA
author keywords Morphotropic boundary; Ferroelectric; Antiferroelectric; Antiferrodistortive; Multiferroics; XRD; Piezoelectric force microscopy
keywords DOPED BIFEO3 CERAMICS; DOMAIN-WALL CONDUCTION; PIEZOELECTRIC PROPERTIES; CRYSTAL-STRUCTURE; TRANSITIONS; FERROMAGNETISM; EVOLUTION; BEHAVIOR; DRIVEN; POLAR
abstract The physical nature of the ferroelectric (FE), ferrielectric (FEI) and antiferroelectric (AFE) phases, their coexistence and spatial distributions underpins the functionality of antiferrodistortive (AFD) multiferroics in the vicinity of morphotropic phase transitions. Using Landau-Ginzburg-Devonshire (LGD) phenomenology and a semi-microscopic four sublattice model (FSM), we explore the behavior of different AFE, FEI, and FE long-range orderings and their coexistence at the morphotropic phase boundaries in FE-AFE-AFD multiferroics. These theoretical predictions are compared with the experimental observations for dense Bi1-yRyFeO3 ceramics, where R is Sm or La atoms with the fraction 0 <= y <= 0.25, as confirmed by the X-ray diffraction (XRD) and Piezoresponse Force Microscopy (PFM). These complementary measurements were used to study the macroscopic and nanoscopic transformation of the crystal structure with doping. The comparison of the measured and calculated AFE/FE phase fractions demonstrate that the LGD-FSM approach well describes the experimental results obtained by XRD and PFM for Bi1-yRyFeO3. Hence, this combined theoretical and experimental approach provides further insight into the origin of the morphotropic boundaries and coexisting FE and AFE states in model rare-earth doped multiferroics. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 1359-6454
isbn 1873-2453
year published 2021
volume 213
digital object identifier (doi) 10.1016/j.actamat.2021.116939
web of science category 14
subject category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000670078400010
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journal analysis (jcr 2019):
journal impact factor 7.656
5 year journal impact factor 7.826
category normalized journal impact factor percentile 93.075
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