|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Ferroelectric solid solutions with perovskite- and columbite-type components: From structures formation to domain and hysteresis phenomena显示文摘The paper reports results on the complex study on ferroelectric ceramics that represent solid solutions containing components with a perovskite-type or columbite-type structure.Solid solutions of a three-component(1−x−y)NaNbO_(3)−xKNbO_(3)−yCdNb_(2)O_(6) system are manufactured at x=0.05-0.20 and y=0.10.Domain structures in ceramic grains are studied.The consistency between experimental and calculated results is examined for coexisting phases split into non-180°domains(mechanical twins)in the solid solution with x=0.15.A correlation between the internal structure(crystal,domain,granular,and defect)and fundamental electromechanical and polarization properties is stated for the studied three-component solid solutions. | M.O.Moysa V.Yu.Topolov K.P.Andryushin A.V.Nagaenko L.A.Shilkina M.V.Il’ina O.I.Soboleva S.Sahoo L.A.Reznichenko | 2023 | Journal of Advanced Dielectrics2023，13，2： | 0 |
| 2 | Low-and high-field electromechanical responses of relaxor-based multicomponent ceramics for application in multiregime actuators显示文摘The electromechanical responses of multicomponent solid solutions Pb_(0.95)Ba_(0.05)(Mg_(1/3)Nb_(2/3))_(0.471)(Zn_(1/3)Nb_(2/3))_(0.102)(Ni_(1/3)Nb_(2/3))_(0.152)Ti_(0.275)O_(3)in low and high electric fields were studied.In both cases,significant electromechanical responses are observed.In particular,the maximum values of the large-signal piezoelectric coefficient d_(33)reach 1600 m/V at very low values of the electric field(≈5 kV/cm).The observed features of the electromechanical responses of the studied ceramics are advantages in terms of their possible application in actuators. | M.V.Talanov A.A.Pavelko L.A.Reznichenko | 2020 | Journal of Advanced Dielectrics2020，10，1： | 0 |
| 3 | Dielectric spectroscopy of solid solutions based on sodium-potassium-cadmium in the temperature range (10 ÷ 900) K显示文摘This paper studies the dielectric spectra of solid solutions(SS)of the system(1−x−y)NaNbO_(3)-xKNbO_(3)-yCdNb_(2)O_(6) y=0.075,x=0.05÷0.30 in the temperature range(10÷900)K.The formation of a local maximum was established in the interval(260÷300)K at small x values,which,as KNbO3 increases,is gradually blurred and becomes an inflection point.Detected in SS with x=0.05÷0.10,the shift of the maxima of dependencesε′/ε_(0)(T)andε″/ε_(0)(T),depending on the frequency of the electric field at the temperature ranges(300÷304)K and(258÷271)K,is not related to relaxation.This anomaly may indicate a crystallographic disorder to A and B positions.The conclusion is made about the expediency of using the obtained results for the development of functional ferroactive materials. | M.O.Moysa K.P.Andryushin A.V.Pavlenko S.P.Kubrin L.A.Reznichenko | 2022 | Journal of Advanced Dielectrics2022，12，4： | 0 |
| 4 | Microstructure features of the BST/(Mg,Ln)-ceramic显示文摘Solid solutions of the composition Ba_(1-x-y)(Mg,Ln)_(x)SryTiO_(3)(x=0.01;0.025;0.04;y=0.20;0.50;0.80;Ln=La,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tu,Yb)were prepared by two-stage solid-phase synthesis followed by sintering using conventional ceramic technology.The influence of rare-earth elements on the microstructure of the prepared ceramic samples was investigated.It was found that regardless of the type of modifiers introduced,the grain landscape of the studied solid solutions with different amounts of SrTiO_(3)is refined(in the initial system,the average grain size,d,at x=0.20 is 6μm;at x=0.50 is 4μm;at x=0.80 is 18μm)to crystallite sizes not exceeding(2-3)μm,and compacted.The using of mechanical activation procedures leads to an even greater decrease in the size and an increase in the density of ceramics.The increasing in the concentration of modifiers in each group(within the considered range of dopant variation)against the background of such a fine-grained structure has little effect on the dynamics of changes in d.It is concluded that it is advisable to use the data obtained in the development of functional materials based on BST/(Mg,Ln)and devices with the participation of these compositions. | K.P.Andryushin A.V.Nagaenko S.V.Khasbulatov L.A.Shilkina E.V.Glazunova S.I.Dudkina I.N.Andryushina L.A.Reznichenko | 2022 | Journal of Advanced Dielectrics2022，12，2： | 0 |
| 5 | Effect of lithium carbonate modification on the ferroelectric phase transition diffusion in lead ferroniobate ceramics显示文摘The paper discusses the features of the effect of modification with lithium carbonate on the dielectric dispersion of lead ferroniobate ceramics.The modifier has been previously shown to change the ways of the recrystallization sintering and therefore reduce the sintering temperature of the ceramics,increase their average grain size,and improve their dielectric and piezoelectric properties.In this study,the emphasis is placed on the analysis of the diffusion effects of the ferroelectric phase transition upon such mod-ification considered from the standpoint of the chemical specifics of the modifier and its location in the structure of the parent compound. | A.A.Pavelko A.V.Pavlenko L.A.Reznichenko | 2022 | Journal of Advanced Dielectrics2022，12，1： | 0 |
| 6 | Structure,microstructure,dielectric and piezoelectric properties of(1−x-y)BiFeO_(3)-xPbFe_(0.5)Nb_(0.5)O_(3)-yPbTiO_(3)ceramics显示文摘Ceramics of quasi-binary concentration section(x=0.50,0.1≤y≤0.2,Δy=0.025)of the ternary solid solution system(1−x−y)BiFeO_(3)-xPbFe_(0.5)Nb_(0.5)O_(3)-yPbTiO_(3)were prepared by the conventional solid-phase reaction method.By using X-ray diffraction technique,the phase diagram of the system was constructed,which was shown to contain the regions of cubic and tetragonal symmetry and the morphotropic phase boundary between them.Grain morphology,dielectric and piezoelectric properties of the selected solid solutions were investigated.The highest piezoelectric coefficient d_(33)=260 pC/N was obtained.Dielectric characteristics of ceramics revealed ferroelectric relaxor behavior,a region of diffuse phase transition from the paraelectric to ferroelectric phase in the temperature range of 350-500 K. | E.I.Sitalo N.A.Boldyrev L.A.Shilkina A.V.Nazarenko A.V.Nagaenko L.A.Reznichenko | 2022 | Journal of Advanced Dielectrics2022，12，1： | 0 |
| 7 | Features of the electrophysical and mechanical properties of n-component ferroactive solid solutions of composition PZT-PZN-PMN显示文摘Study of the fatigue endurance and mechanical strength of solid solutions of the PZT-PZN-PMN system,modified with Ba and Sr,corresponding to the formula(Pb_(1-a_(1)-a_(2))Sr_(a_(1))Ba_(a_(1)))[Ti_(x)Zr_(y)<(Nb_(2/3)Zn_(1/3))(Nb_(2/3)Mg_(1/3))>_(1-x-y)]O_(3),with a_(1)=0.02÷0.12;Da_(1)=0.02,a_(2)=0.0036÷0.073;x=0.385÷0.430,y=0.402÷0.447 is presented.It is shown that the evolution of the polarization characteristics with an increase in the number of repolarization cycles,n,is characterized by two sections:slow fatigue and logarithmic evolution.It was found that an increase in the strontium content shifts the beginning of the logarithmic stage towards to the large n.It is shown that an increase in the average grain size decreases the mechanical strength.A conclusion is made about the expediency of using the obtained data in the development of devices operating in power modes. | K.P.Andryushin I.N.Andryushina A.V.Cherpakov A.V.Popov I.A.Verbenko L.A.Reznichenko | 2021 | Journal of Advanced Dielectrics2021，11，5： | 0 |
| 8 | Dielectric and piezoelectric properties of modified lead-free NaNbO_(3)-KNbO_(3)/PVDF composite ceramics显示文摘This work presents the results of study of the electrophysical properties of composite polymer ceramics(1−x)[KNN-LTSN]-xPVDF at x=25 vol.%and x=50 vol.%in the temperature range of T=20-160℃and frequency range of f=2×10^(1)-2×10^(6)Hz.The concentration dependence of piezomodules of the studied materials has been analyzed as a function of temperature.X-ray measurements have also been carried out.A model of description of revealed dielectric parameters dispersion in the material is presented.The nonclassical modified Havriliak-Negami model written for complex electrical conductivity has been used to describe the temperature-frequency properties.It is shown that the dielectric spectra of the studied composites include three relaxation processes in the temperature ranges of 40-80℃,80-120℃and 120-150℃,which were confirmed by the dynamics of changes in the dependences of g′(f),tgδ(f),M′(f),M″(f)and M″(M′).All three processes are almost exactly described by this model and well correlated with the studies by other researchers of the composites based on PVDF.The results of this work show that the use of such experimental model is suitable for describing the complex dielectric spectra of any nonlinear dielectrics including composite materials. | Y.I.Yurasov M.I.Tolstunov A.V.Nazarenko A.A.Pavelko A.V.Yudin I.A.Verbenko L.A.Reznichenko | 2021 | Journal of Advanced Dielectrics2021，11，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员