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Journal of Advanced Dielectrics 2022年第4期12卷 18-23页

作者： Andryushin Konstantin Dudkina Svetlana shilkina lidiya Sahoo Sushrisangita Moysa Maksim Andryushina Inna Verbenko Iliya Reznichenko Larisa Research Institute of Physics Southern Federal UniversityStachki str.194 Rostov-on-Don 344090Russia

Solid solutions(SS)of 3-and 4-component systems based on lead titanate-zirconate were prepared by the method of solid-phase reactions and uniaxial hot *** dependences of the relative permittivity of polarized samples on the electronegativity(EN)of their constituent cations have been *** ferro-hardness of the SS(the stability of the domain structure to external influences)is shown to be directly dependent on the EN of elements B in the corresponding oxidation states,i.e.,the degree of covalence of the B-O *** deviation from this dependence in SS with Ni and Cd is explained by their individual features,which result in changes in the degree of bond covalence in both cationic *** conducted crystal-chemical analysis made it possible to choose promising SS when creating ferroelectric materials,including textured piezoelectric ceramic materials for piezoelectric transducers for various purposes:Piezotransformers,piezoelectric motors,ultrasonic emitters,filter devices,ultrasonic flaw detectors,accelerometers,etc.

关键词： Solid solutions multicomponent systems lead titanate-zirconate electronegativity dielectric properties

Crystal structure,microstructure,electrophysical properties,and thermally induced aging of PZT-CdNb_(2)O_(6)ceramics

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Journal of Advanced Dielectrics 2022年第5期12卷 1-11页

作者： Andryushin Konstantin Pavelko Alexey Sahoo Sushrisangita shilkina lidiya Nagaenko Alxandr Andryushina Inna Moysa Maksim Reznichenko Larisa Research Institute of Physics Southern Federal University Rostov-on-Don344090Stachki str.194Russia Institute of High Technology and Piezo Technic Southern Federal University Rostov-on-Don344090Milchakova 10Russia

Solid solution samples of the three-component system(1−x)Pb(Ti_(0.5)Zr_(0.5))O_(3)−xCdNb_(2)O_(6)with x=0.0125-0.0500,Δx=0.0125 were obtained by solid phase synthesis followed by sintering using conventional ceramic *** crystal structure,microstructure,electrophysical,and thermophysical properties of these ceramics have been *** is shown that all studied solid solutions can be divided into two groups(with x=0.0125 and with x>0.0125),characterized by different characteristics of the change in properties with variations in external *** is probably due to the transition from a perovskite-type structure with a tetragonal(T)unit cell to inhomogeneous solid solutions consisting of a series of T-phases with similar cell parameters.A conclusion is made about the expediency of using the data obtained in the development of similar materials for devices based on them.

关键词： PZT CdNb_(2)O_(6) XRD microstructure piezoelectric properties thermophysical properties phase transition fatigue

Phase states and electrophysical properties of multicomponent perovskite solid solutions on the base of PMN-PT and PZT systems

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Journal of Advanced Dielectrics 2020年第1期10卷 68-73页

作者： Aleksey Pavelko lidiya shilkina Larisa Reznichenko Research Institute of Physics Southern Federal University 194 Stachki av.Rostov-on-Don 344090Russia

Phase diagrams were constructed(at room temperature),the dielectric,piezoelectric,elastic and reversible properties of the Gemodified xPbTiO_(3)-yPbZrO_(3)-zPbNb_(2/3)Mg_(1/3)O_(3) multicomponent system ceramics were *** data obtained are compared with the results of studies of solid solutions of basic binary systems,as well as with the results obtained previously for other sections of the system under consideration.A significant increase in the width of the morphotropic region,diffusion of the concentration dependences of the electrophysical characteristics,and an increase in stability under the influence of constant bias fields in the solid solutions of the studied system were established.

关键词： Ferroelectrics ceramics multicomponent system phase diagrams piezoelectric properties

Obtaining,structure,microstructure and dielectric characteristics of ceramics and thin films of ferro-piezoelectric materials based on the PZT system

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Journal of Advanced Dielectrics 2020年第1期10卷 16-22页

作者： Inna Andryushina Anatoliy Pavlenko Sergey Zinchenko Konstantin Andryushin lidiya shilkina Ekaterina Glazunova Alexandr Nagaenko Daniil Stryukov Hizir Sadykov Larisa Reznichenko Laboratory of Intelligent Materials Plasma Technologies and Innovative Multifunctional Systems Research Institute of Physics Southern Federal University Rostov-on-Don344090Stachki Str.194Russia Southern Scientific Centre Russian Academy of Sciences Rostov-on-Don344006Chehova Str.41Russia Institute of High Technology and Piezo Technic Southern Federal University Rostov-on-Don 344090Milchakova 10Russia Faculty of Physics and Information-Communication Technologies Grozny 364024Sheripova Str.32Russia

This paper presents the results of studies of the structure,microstructure,dependences of the piezoelectric properties on the electric field(dielectric hysteresis loops,reversible nonlinearity,deformation characteristics)and dielectric properties of the ceramic material PCR-13(based on the PZT system)in the temperature range 300-900K and frequencies of an alternating electric field(25÷2·10^(6))*** character of the obtained dependences made it possible to attribute PCR-13 to ferro-hard *** the HF cathodic sputtering method,PCR-13 thin films were fabricated on Si(001)*** is shown that they are polycrystalline textured,while in comparison with bulk material,the film contains tensile stresses of the unit cell in the plane of the substrate and compresses in the perpendicular direction with the valueε_(33)=-*** capacitance-voltage characteristics of the Al/PCR-13/Si/Al heterostructure were *** reasons for the revealed patterns are discussed.

关键词： Structure dielectric properties P-E loops S33-E curves thin films

Destruction phenomena in ferroactive materials

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Journal of Advanced Dielectrics 2020年第4期10卷 22-30页

作者： Sidek Khasbulatov Aleksander Cherpakov Ivan Parinov Konstantin Andryushin lidiya shilkina Vladimir Aleshin Inna Andryushina Balabek Mardaliev David Gordienko Iliya Verbenko Larisa Reznichenko Research Institute of Physics Southern Federal University Rostov-on-Don 344090 Stachki str.194Russia Faculty of Physics and Information-Communication Technologies Grozny 364024 Sultan Dudaev Boulevard17A Russia Institute of Mathematics Mechanics and Computer Science named after of I.I.Vorovich Southern Federal University 344090 Rostov-on-Don Stachki str.200/1Russia Faculty of Physics Southern Federal University 344090 Rostov-on-DonZorge 5Russia

The results of a comprehensive study of the crystal structure,grain structure,and strength properties of ceramic bismuth ferrite with rare earth elements(REE)obtained by two-stage solid-phase synthesis followed by sintering using conventional ceramic technology are *** reasons for the formation of low mechanical strength and the development of destruction phenomena in solid solutions with small REE(R<0:94Å)are considered:Tb,Dy,Ho,Er,Tm,Yb,*** causes of the observed phenomena associated with the composite-like structure of the studied media and,as a consequence,the occurrence of local stresses of structural elements that provoke crack formation are established.A source of the latter are also the structural features of the grain *** conclusion is made about the appropriateness of taking into account the information obtained when developing devices based on BiFeO_(3)/REE multiferroics.

关键词： Structure microstructure destruction multiferroics