Peculiarities of the Crystal Structure Evolution of BiFeO3-BaTiO3 Ceramics across Structural Phase Transitions
authors Karpinsky, DV; Silibin, MV; Trukhanov, SV; Trukhanov, AV; Zhaludkevich, AL; Latushka, SI; Zhaludkevich, DV; Khomchenko, VA; Alikin, DO; Abramov, AS; Maniecki, T; Maniukiewicz, W; Wolff, M; Heitmann, V; Kholkin, AL
nationality International
author keywords multiferroics; diffraction; crystal structure; phase transitions
abstract Evolution of the crystal structure of ceramics BiFeO3-BaTiO3 across the morphotropic phase boundary was analyzed using the results of macroscopic measuring techniques such as X-ray diffraction, differential scanning calorimetry, and differential thermal analysis, as well as the data obtained by local scale methods of scanning probe microscopy. The obtained results allowed to specify the concentration and temperature regions of the single phase and phase coexistent regions as well as to clarify a modification of the structural parameters across the rhombohedral-cubic phase boundary. The structural data show unexpected strengthening of structural distortion specific for the rhombohedral phase, which occurs upon dopant concentration and temperature-driven phase transitions to the cubic phase. The obtained results point to the non-monotonous character of the phase evolution, which is specific for metastable phases. The compounds with metastable structural state are characterized by enhanced sensitivity to external stimuli, which significantly expands the perspectives of their particular use.
publisher MDPI
year published 2020
volume 10
issue 4
digital object identifier (doi) 10.3390/nano10040801
web of science category Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000539577200204
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