Surface and finite size effects impact on the phase diagrams, polar, and dielectric properties of (Sr,Bi)Ta2O9 ferroelectric nanoparticles

Eliseev, Eugene A.; Семченко, А. В.; Fomichоv, Yevhen M.; Glinchuk, M. D.; Sidsky, V. V.; Kolos, V. V.; Pleskachevsky, Yu. M.; Silibin, Maxim V.; Morozovsky, Nicholas V.; Morozovska, Anna N.

doi:10.1063/1.4952707

Cited by 38 publications

(16 citation statements)

References 64 publications

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“…Such a research can be very useful for the science itself and for advanced applications, because the theory of size effects in nanoparticles allows us to determine the physical origin of polar and other anomalies in physical properties, the change in the temperature of a phase transition in nanoparticles with a decrease of their size. In particular, by using the phenomenological approach, Niepce [117], Huang et al [118,119], Ma [120], Eliseev et al [50], and Morozovska et al [11,[121][122][123][124] showed that the transition temperature variations and the enhancement or weakening of polar properties in spherical and cylindrical nanoparticles are governed by various physical mechanisms, such as the correlation effect, depolarization fields, flexolectricity, electrostriction, and surface tension.…”

Section: Multiferroic Nanoparticles the State Of Artmentioning

confidence: 99%

Renovation of Interest in the Magnetoelectric Effect in Nanoferroics

Glinchuk

Khist

2018

Ukr. J. Phys.

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Recent theoretical studies of the influence of the magnetoelectric effect on the physical properties of nanosized ferroics and multiferroics have been reviewed. Special attention is focused on the description of piezomagnetic, piezoelectric, and linear magnetoelectric effects near the ferroid surface in the framework of the Landau–Ginzburg–Devonshire phenomenological theory, where they are considered to be a result of the spontaneous surface-induced symmetry reduction. Therefore, nanosized particles and thin films can manifest pronounced piezomagnetic, piezoelectric, and magnetoelectric properties, which are absent for the corresponding bulk materials. In particular, the giant magnetoelectric effect induced in nanowires by the surface tension is possible. A considerable influence of size effects and external fields on the magnetoelectric coupling coefficients and the dielectric, magnetic, and magnetoelectric susceptibilities in nanoferroics is analyzed. Particular attention is paid to the influence of a misfit deformation on the magnetoelectric coupling in thin ferroic films and their phase diagrams, including the appearance of new phases absent in the bulk material. In the framework of the Landau–Ginzburg–Devonshire theory, the linear magnetoelectric and flexomagnetoelectric effects induced in nanoferroics by the flexomagnetic coupling are considered, and a significant influence of the flexomagnetic effect on the nanoferroic susceptibility is marked. The manifestations of size effects in the polarization and magnetoelectric properties of semiellipsoidal bismuth ferrite nanoparticles are discussed.

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Section: Multiferroic Nanoparticles the State Of Artmentioning

confidence: 99%

Renovation of Interest in the Magnetoelectric Effect in Nanoferroics

Glinchuk

Khist

2018

Ukr. J. Phys.

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“…Such study may be very useful for science and advanced applications, because the theory of finite size effects in nanoparticles allows one to establish the physical origin of the polar and other physical properties anomalies, transition temperature and phase diagrams changes appeared with the nanoparticles sizes decrease. In particular, using the continual phenomenological approach Niepce [52], Huang et al [53,54], Ma [55], Eliseev et al [56] and Morozovska et al [57,58,59,60,61] have shown, that the changes of the transition temperatures, the enhancement or weakening of polar properties in spherical and cylindrical nanoparticles are conditioned by the various physical mechanisms, such as correlation effect, depolarization field, flexoelectricity, electrostriction, surface tension and Vegardtype chemical pressure.…”

Section: Multiferroelectric Nanoparticles State-of-artmentioning

confidence: 99%

Size effects of ferroelectric and magnetoelectric properties of semi-ellipsoidal bismuth ferrite nanoparticles

Khist

Eliseev

Glinchuk

et al. 2017

Journal of Alloys and Compounds

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Bismuth ferrite (BiFeO 3 ) is one of the most promising multiferroics with a sufficiently high ferroelectric (FE) and antiferromagnetic transition temperatures, and magnetoelectric (ME) coupling coefficient at room temperature, and thus it is highly sensitive to the impact of cross-influence of applied electric and magnetic fields. According to the urgent demands of nanotechnology miniaturization for ultra-high density data storage in advanced nonvolatile memory cells, it is very important to reduce the sizes of multiferroic nanoparticles in the self-assembled arrays without serious deterioration of their properties. We study size effects of the phase diagrams, FE and ME properties of semi-ellipsoidal BiFeO 3 nanoparticles clamped to a rigid conductive substrate. The spatial distribution of the spontaneous polarization vector inside the nanoparticles, phase diagrams and paramagnetoelectric (PME) coefficient were calculated in the framework of modified Landau-Ginzburg-Devonshire (LGD) approach. Analytical expressions were derived for the dependences of the FE transition temperature, average polarization, linear dielectric susceptibility and PME coefficient on the particle sizes for a general case of a semi-ellipsoidal nanoparticles with three different semi-axes a, b and height c. The analyses of the obtained results leads to the conclusion that the size effect of the phase diagrams, spontaneous polarization and PME coefficient is rather sensitive to the particle sizes aspect ratio in the polarization direction, and less sensitive to the absolute values of the sizes per se.

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“…Hence, donor doping of SBN within the limit of orthorhombic distortion (

\frac{b}{a}

) and orthorhombicity

((), ε = \frac{2 (a - b)}{((), a + b)})

greatly enhances its properties . The presence of foreign elements has an influence on the flexo‐chemical effect of the phase transition, polar and dielectric properties of these materials . In this sense, donor doping with

W^{6 +}

and

{Mo}^{6 +}

with higher valency but lower ionic radius than B‐site ion suppress the oxygen vacancy at the same time increase the rattling space within the octahedra .…”

Section: Introductionmentioning

confidence: 99%

Substitution‐induced near phase transition with Maxwell–Wagner polarization in SrBi₂(Nb_1−xA_x)₂O₉ ceramics [A = W, Mo and x = 0, 0.025]

Banerjee

Franco

2017

Physica Status Solidi (a)

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The synthesis, micro-structure, spectroscopic, and dielectric properties of SrBi 2 (Nb 1−x A x ) 2 O 9 [with A = W, Mo and x = 0, 0.025] ceramics were systematically studied. A relative density of ≥98% was obtained for all the samples using a twostep solid state sintering process. XRD images showed that a single phase layered perovskite structure of SrBi 2 Nb 2 O 9 (SBN) was formed. The orthorhombic structure with A2 1 am phase group was found up to ∼2.5 at.% substitution of W and Mo into the SBN matrix. SEM revealed the rod-like grain structure similar to the Maxwell-Wagner (MW) parallel plate capacitor model in SBN ceramic, whereas smaller heterogeneous grain structure was observed in W and Mo donor doped ceramics. The initial high value of real and imaginary part of relative permittivity also indicated the presence of interfacial MW relaxation in the SBN ceramics. The experimental data fit well to the theoretical data obtained from MW polarization model in SBN ceramics. The possible origin of the difference of the properties present in the doped sample has been explained based on grain size, orientation, and modification done in the ceramic matrices.

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Surface and finite size effects impact on the phase diagrams, polar, and dielectric properties of (Sr,Bi)Ta2O9 ferroelectric nanoparticles

Cited by 38 publications

References 64 publications

Renovation of Interest in the Magnetoelectric Effect in Nanoferroics

Renovation of Interest in the Magnetoelectric Effect in Nanoferroics

Size effects of ferroelectric and magnetoelectric properties of semi-ellipsoidal bismuth ferrite nanoparticles

Substitution‐induced near phase transition with Maxwell–Wagner polarization in SrBi₂(Nb_1−xA_x)₂O₉ ceramics [A = W, Mo and x = 0, 0.025]

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Surface and finite size effects impact on the phase diagrams, polar, and dielectric properties of (Sr,Bi)Ta2O9 ferroelectric nanoparticles

Cited by 38 publications

References 64 publications

Renovation of Interest in the Magnetoelectric Effect in Nanoferroics

Renovation of Interest in the Magnetoelectric Effect in Nanoferroics

Size effects of ferroelectric and magnetoelectric properties of semi-ellipsoidal bismuth ferrite nanoparticles

Substitution‐induced near phase transition with Maxwell–Wagner polarization in SrBi2(Nb1−xAx)2O9 ceramics [A = W, Mo and x = 0, 0.025]

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Substitution‐induced near phase transition with Maxwell–Wagner polarization in SrBi₂(Nb_1−xA_x)₂O₉ ceramics [A = W, Mo and x = 0, 0.025]