Reentrant polar phase induced by the ferro-ionic coupling in Bi\(_{1-x}\)Sm\(_x\)FeO\(_3\) nanoparticles

Using the model of four sublattices, the Landau-Ginzburg-Devonshire-Kittel phenomenological approach and the Stephenson-Highland ionic adsorption model for the description of coupled polar and antipolar long-range orders in ferroics, we calculated analytically the phase diagrams and polar properties...

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Published inarXiv.org
Main Authors Morozovska, Anna N, Eliseev, Eugene A, Fesych, Igor V, Zagorodniy, Yuriy O, Pylypchuk, Oleksandr S, Leonenko, Evgenii V, Rallev, Maxim V, Yaremkevych, Andrii D, Yurchenko, Lesya P, Demchenko, Lesya, Kalinin, Sergei V, Fesenko, Olena M
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 26.08.2024
Subjects
Antiferroelectricity
Coupling
Electron paramagnetic resonance
Nanoparticles
Phase diagrams
Qualitative analysis
Samarium
Size effects
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Summary:Using the model of four sublattices, the Landau-Ginzburg-Devonshire-Kittel phenomenological approach and the Stephenson-Highland ionic adsorption model for the description of coupled polar and antipolar long-range orders in ferroics, we calculated analytically the phase diagrams and polar properties of Bi\(_{1-x}\)Sm\(_x\)FeO\(_3\) nanoparticles covered by surface ions in dependence on their size, surface ions density, samarium content "x" and temperature. The size effects and ferro-ionic coupling govern the appearance and stability conditions of the long-range ordered ferroelectric, reentrant ferrielectric and antiferroelectric phases in the Bi1-xSmxFeO3 nanoparticles. Calculated phase diagrams are in a qualitative agreement with the X-ray diffraction phase analysis, electron paramagnetic resonance, infra-red spectroscopy and electrophysical measurements of the Bi\(_{1-x}\)Sm\(_x\)FeO\(_3\) nanopowders sintered by the solution combustion method. The combined theoretical-experimental approach allows to establish the influence of the ferro-ionic coupling and size effects in Bi\(_{1-x}\)Sm\(_x\)FeO\(_3\) nanoparticles on their polar properties.
ISSN:2331-8422