Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102935
Title: Morphotropic phase boundary in Sm-substituted BiFeO3 ceramics: Local vs microscopic approaches
Authors: Pakalniškis, A.
Skaudžius, R.
Zhaludkevich, D. V.
Zhaludkevich, A. L.
Alikin, D. O.
Abramov, A. S.
Murauskas, T.
Shur, V. Y.
Dronov, A. A.
Silibin, M. V.
Selskis, A.
Ramanauskas, R.
Lukowiak, A.
Strek, W.
Karpinsky, D. V.
Kareiva, A.
Шур, В. Я.
Issue Date: 2021
Publisher: Elsevier Ltd
Citation: Morphotropic phase boundary in Sm-substituted BiFeO3 ceramics: Local vs microscopic approaches / A. Pakalniškis, R. Skaudžius, D. V. Zhaludkevich, et al. — DOI 10.1016/j.jallcom.2021.159994 // Journal of Alloys and Compounds. — 2021. — Vol. 875. — 159994.
Abstract: Samarium substituted bismuth ferrite (BiFeO3) ceramics prepared by sol-gel synthesis method were studied using both local scale and microscopic measurement techniques in order to clarify an evolution of the crystal structure of the compounds across the morphotropic phase boundary region. X-ray diffraction analysis, transmission and scanning electron microscopies, XPS, EDS/EDX experiments and piezoresponse force microscopy were used to study the structural transitions from the polar active rhombohedral phase to the anti-polar orthorhombic phase and then to the non-polar orthorhombic phase, observed in the Bi1−xSmxFeO3 compounds within the concentration range of 0.08 ≤ x ≤ 0.2. The results obtained by microscopic techniques testify that the compounds in the range of 0.12 ≤ x ≤ 0.15 are characterized by two phase structural state formed by a coexistence of the rhombohedral and the anti-polar orthorhombic phases; two phase structural state observed in the compounds with 0.15<x<0.18 is associated with a coexistence of the anti-polar orthorhombic and the non-polar orthorhombic phases. Local scale measurements have revealed a notable difference in the concentration range ascribed to the morphotropic phase boundary estimated by microscopic measurements, the obtained results testify a wider concentration range ascribed to a coexistence of different structural phases, the background of the mentioned difference is discussed. © 2021 Elsevier B.V.
Keywords: MORPHOTROPIC PHASE BOUNDARY
SOL-GEL PROCESSING
XRD, TEM, SEM, PFM
BISMUTH COMPOUNDS
CERAMIC MATERIALS
CRYSTAL STRUCTURE
IRON COMPOUNDS
SAMARIUM COMPOUNDS
SCANNING PROBE MICROSCOPY
SOL-GEL PROCESS
X RAY POWDER DIFFRACTION
CONCENTRATION RANGES
LOCAL SCALE
MICROSCOPIC MEASUREMENT
MORPHOTROPIC PHASE BOUNDARIES
NON-POLAR
ORTHORHOMBIC PHASIS
SOL-GEL PROCESSING
STRUCTURAL STATE
TWO PHASE
XRD, TEM, SEM, PFM
SCANNING ELECTRON MICROSCOPY
URI: http://hdl.handle.net/10995/102935
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85105088757
PURE ID: 21860723
2540f6da-f859-41e8-93bb-4597d2aa5304
ISSN: 9258388
DOI: 10.1016/j.jallcom.2021.159994
metadata.dc.description.sponsorship: This work was supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 778070 . M.V.S acknowledges Ministry of Science and Higher Education of the Russian Federation within the framework of state support for the creation and development of World-Class Research Centers “Digital biodesign and personalized healthcare” №075-15-2020-926 . Diffraction measurements and analysis (A.A.D. and D.V.K.) were supported by RFBR (projects # 20-58-00030 ) and BRFFR (project # F20R-123 ). Piezoresponse force microscopy investigations were made possible by the Russian Science Foundation (grant 19-72-10076 ). The equipment of the Ural Center for Shared Use “Modern nanotechnology” UrFU was used.
RSCF project card: 19-72-10076
CORDIS project card: 778070
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