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Papers by Inna Lisnevskaya

Journal of Composites Science

Magnetoelectric lead-free composite ceramic based on the piezoelecrtic Ba0.85Ca0.15Ti0.9Zr0.1O3 (... more Magnetoelectric lead-free composite ceramic based on the piezoelecrtic Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCZT) and magnetic NiCo0.02Cu0.02Mn0.1Fe1.8O4−d (NCCMF) has been obtained by the solid state method using preliminarily synthesized by the solid-state method precursors. X-ray diffraction measurements, microstructural, magnetic, dielectric, piezoelectric and magnetoelectric studies have been carried out. Impurity phases were not contained in the composites, and there were no signs of interfacial interaction even at the doping level. Ceramics has a high electrical resistivity at direct current (~109 Ω·cm) and, over the entire range of x studied, exhibits a combination of magnetic and piezoelectric parameters, which vary over a wide range and clearly depend on the composites composition. The maximum magnetoelectric coupling coefficient ΔE/ΔH ≈ 90 mV/(cm·Oe) at a frequency of 1 kHz has been observed for specimens with x = 60–70%.

International Journal of Applied Ceramic Technology, 2016

The effect of fabrication method on the structure of (100 − x) wt% BaTiO3 + x wt% La0.7Ba0.3MnO3 ... more The effect of fabrication method on the structure of (100 − x) wt% BaTiO3 + x wt% La0.7Ba0.3MnO3 (BT + BLM) and (100 − x) wt% Na, Bi, Sr-doped PZT + x wt% La0.65Pb0.35MnO3 (PZTNB-1 + PLM) magnetoelectric ceramics was studied. Profound interdiffusion of two interacting phases occurs in nearly all cases. The BT + BLM and PZTNB-1 + PLM ceramics exhibit low piezoelectric parameters even with small manganite contents (10–20 wt%). The increased content of the magnetostrictive phase complicates the polarization process due to the high conductivity of La0.7Ba0.3MnO3 and La0.65Pb0.35MnO3. Doping of BaTiO3 and PZTNB-1 with small additions of manganite components affects piezoelectric properties, thereby lowering efficiency of the resulting material.

Comments on Inorganic Chemistry, 2020

Nanomaterials, 2020

We investigated the opportunities for obtaining hexaferrites Pb1−xLaxFe12−xZnxO19 (x = 0–1) from ... more We investigated the opportunities for obtaining hexaferrites Pb1−xLaxFe12−xZnxO19 (x = 0–1) from citrate–glycerin gel and showed that synthesis occurs via the formation of the Fe3O4 phase; products with a small amount of hematite impurity Fe2O3 can be obtained after firing at 800 to 900 °C with 0 ≤ x ≤ 0.5. If x > 0.5, perovskite-like LaFeO3 is formed in samples, so that if x = 0.9–1, the synthesis products virtually do not contain phases with hexaferrite structures and represent a mixture of LaFeO3, Fe2O3, and Fe3O4. Within the range of 0 ≤ x ≤ 0.5, the electrical and magnetic characteristics of hexaferrites Pb1−xLaxFe12−xZnxO19 are slightly dependent on x and have the following average values: A relative permittivity ε/ε0 ~ 45, a dielectric loss tangent tan δ ~ 0.6, an electrical resistivity R ~ 109 Ohm cm, coercivity Hc ~ 3 kOe, saturation magnetization Ms ~ 50 emu/g, and remanent magnetization Mr ~ 25 emu/g. The magnetoelectric (ME) ceramics 50 wt.% PZTNB-1 + 50 wt.% Pb1−xLax...

Applied Physics A, 2020

The effect of magnetoactive cations on the stability and properties of Aurivillius phases (1) Bi ... more The effect of magnetoactive cations on the stability and properties of Aurivillius phases (1) Bi 5 Ti 2 (TiFe) 1−x (NiNb) x O 15 , (2) Bi 4 Ti 3−2.5x (Nb 1/2 Fe 1/2) x (Nb 2/3 Ni 1/3) 1.5x O 12 , (3) Bi 3 Ti 1−2.5x Nb 1+1.5x (Fe 1/2 Ni 1/2) x O 9 , (4) Bi m+1 Fe m−3 Ti (3−x) (Ni 1/3 Nb 2/3) x O 3m+3 has been investigated. The range of existence of solid solutions was found to be limited to the values of x = 0-0.10 (1), 0-0.3 (2), and 0-0.2 (3). Although the solid solutions exist in the whole concentration range studied (x = 0-0.07) in the series (4), the stability is limited to the value of m = 6-7. The unit cell volumes increase with increasing x, which is expected due to the ionic radii of the dopant cations that are larger than those of the substituted cations. The coexistence of piezoelectric and magnetic properties was observed in the samples of solid solutions (1) and (4): the values of the piezoelectric coefficient d 33 and piezoelectric voltage coefficient g 33 reach 7 pC/N and 3.5 mV m/N, respectively; the saturation magnetization M s and remanent magnetization M r increase with increasing x, while the coercivity remains almost unchanged. Thermal studies indicate phase transitions in Bi 5 Ti 2 (TiFe) 1−x (NiNb) x O 15 , and Bi m+1 Fe m−3 Ti (3−x) (Ni 1/3 Nb 2/3) x O 3m+3 at ~ 300-400, 750 and 840 °C. Additionally, these samples demonstrate a magnetodielectric effect of up to ~ 50% when applying a DC magnetic field of ~ 1 T in the temperature range of ~ 340-350 °C that is supposed to be a ferromagnetic Curie point.

Ceramics International, 2019

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Ferroelectrics, 2018

Ba 1Àx Pb x TiO 3 /Y 3 Fe 5 O 12 particulatecomposites with [ ¼ 0-1 were synthesized. The composi... more Ba 1Àx Pb x TiO 3 /Y 3 Fe 5 O 12 particulatecomposites with [ ¼ 0-1 were synthesized. The composites (100-y) wt.% Ba 0.9 Pb 0.1 TiO 3y wt.% Y 3 Fe 5 O 12 with e ¼ 40-50 wt.% exhibit ME coupling coefficient Dð/DH of $10 mV/(cmÁOe) due to the prominent piezoelectric properties. ME response in ffla 1À[ Pb x TiO 3 /Y 3 Fe 5 O 12 ceramics with [ ¼ 0.35À1 is precluded by a high content of pyrochlore-type Y 2 Ti 2 O 7 that forms through chemical interfacial interaction. An increase in sintering temperature to 1300 was found to be inappropriate to obtain phase-pure fflaTiO 3 /Y 3 Fe 5 O 12 ceramics due to the partial decomposition of Y 3 Fe 5 O 12 to yttrium orthoferrite YFeO 3 .

Ferroelectrics, 1994

Abstract The PZT/ferrite composite materials of different types of connectivity were prepared and... more Abstract The PZT/ferrite composite materials of different types of connectivity were prepared and investigated. The firing of powder mixtures, hot pressing, alternative slicing of piezoelectric ceramic and ferrite and other techniques were used to produce the ...

Comments on Inorganic Chemistry, 2019

BiMnO 3 exhibit multiferroic properties, which attract much attention due to numerous potential a... more BiMnO 3 exhibit multiferroic properties, which attract much attention due to numerous potential applications. The most well-investigated and traditional techniques for synthesizing this material include high-pressure and high-temperature treatment. In this way, soft chemistry synthesis of BiMnO 3 is desirable. Even though the formation of BiMnO 3 at ambient pressure is not possible according to the phase diagram, many scientific groups are focused on solving this problem.