Structural and Magnetic Phase Transitions in the Fe-Rich Compositional Range of the Multiferroic BiFe1- (x) [Zn0.5Ti0.5] (x) O-3 Perovskites
authors Cizmar, E; Vorobiov, S; Kliuikov, A; Radyush, YV; Pushkarev, AV; Olekhnovich, NM; Cardoso, JP; Salak, AN; Feher, A
nationality International
journal INTEGRATED FERROELECTRICS
author keywords High-pressure synthesis; metastable phase; rhombohedral structure; Curie point; Neel temperature
keywords POLARIZATION; CERAMICS
abstract The (1-x)BiFeO3-xBiZn(0.5)Ti(0.5)O(3) solid solutions (0.05 <= x <= 0.25) were prepared using high-pressure synthesis. Up to 25 at.% substitutions of Fe by the combination of [Mg0.5Ti0.5] were found to increase the unit cell volume of the primitive perovskite cell, while the crystal structure remains the rhombohedral perovskite, as that in the parent BiFeO3. With increasing temperature, the as-prepared ceramics of the x = 0.25 composition reversibly transform into a cubic modification between about 970 and 1070 K. However, this phase transition is overlapped with a gradual decomposition of the perovskite phase, which starts above 770 K. The perovskite phase with the substitution rate corresponding to x = 0.25 is antiferromagnetic below T (N)similar to 460 K. Peculiarities of the temperature-dependent magnetic behavior of this composition at about 220 and 315 K, which might indicate transitions between the states with different magnetic orderings, have been observed.
publisher TAYLOR & FRANCIS LTD
issn 1058-4587
isbn 1607-8489
year published 2021
volume 220
issue 1
beginning page 1
ending page 8
digital object identifier (doi) 10.1080/10584587.2021.1921529
web of science category 8
subject category Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter
unique article identifier WOS:000724575500002
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