scholarly journals Магнитострикция через магнитоэлектричество: использование магнитоэлектрического отклика для определения магнитострикционных характеристик композиционных мультиферроиков

2019 ◽  
Vol 45 (22) ◽  
pp. 36
Author(s):  
Д.А. Филиппов ◽  
В.М. Лалетин ◽  
Н.Н. Поддубная ◽  
V.V. Shvartsman ◽  
D.C. Lupascu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Physical Properties ◽  
Field Dependence ◽  
Lead Zirconate Titanate ◽  
Composite Structures ◽  
Lead Zirconate ◽  
Field Dependency ◽  
Voltage Coefficient ◽  
Magnetoelectric Response ◽  
Magnetoelectric Coefficient

A new way for determining the magnetostriction characteristics of a composite multiferroics using the magnetoelectric response of the structure is proposed. It is shown that integral from the field dependency of linear magnetoelectric coefficient is the magnetostriction characteristic of the structure. The results of an experimental study of the physical properties of bulk composites based on lead zirconate titanate and ferrite-nickel spinel are presented. Based on the field dependence of the magnetoelectric voltage coefficient, magnetostriction curves of composite structures with a content of ferrospinel of 10–70% were obtained.

Investigation of the influence of various factors on the dielectric, piezoelectric, and magnetoelectric properties of 1-3, 3-1, and 1-1 multiferroic composites

2016 ◽  
Vol 51 (4) ◽  
pp. 507-517 ◽  
Author(s):  
I V Lisnevskaya ◽  
TG Lupeiko ◽  
KV Myagkaya
Keyword(s):  
Lead Zirconate Titanate ◽  
Volume Fraction ◽  
Coupling Efficiency ◽  
Volume Ratio ◽  
Lead Zirconate ◽  
Linear Size ◽  
Magnetoelectric Composite ◽  
Voltage Coefficient ◽  
Magnetoelectric Properties ◽  
Magnetoelectric Coefficient

Technique to fabricate magnetoelectric piezoelectric/magnetostrictive ferrite composites with 1-3, 3-1, 1-1 connectivities through binding uniformed by size and package ceramic elements was developed. Advantage of this technique is the use of piezoceramic which was previously poled under optimal conditions; this is important, because piezoelectric phase embedded in magnetoelectric composite is difficult to pole due to the high electrical conductivity of adjacent ferrite phase. The effect of piezoelectric material type, volume ratio of phases, and linear size of repeating fragment on the dielectric, piezoelectric, and magnetoelectric properties of ν PZT + (1−ν) NiCo0.02Cu0.02Mn0.1Fe1.8O4−δ ( v – volume fraction of piezoelectric, PZT – commercial grades of lead–zirconate–titanate such as PZT-36, PZTNB-1, PZTST-2, PZTTBS-2, PZT-19) composites is studied. It is shown that, with an equal volume ratio of phases, composites based on piezoceramics with high piezoelectric voltage coefficient gij (PZT-36, PZTNB-1) exhibit the most prominent magnetoelectric coupling efficiency. Decrease in the linear size of repeating fragment lΣ also contributes to an increase in Δ E/Δ H coefficient. Given other conditions being equal, 1-1 type composites commonly exhibit the highest values of magnetoelectric coefficient. Maximal values of magnetoelectric coefficient Δ E/Δ H for 0.5 PZT-36 + 0.5 NiCo0.02Cu0.02Mn0.1Fe1.8O4−δ magnetoelectric heterostructures reach ∼500 mV/(cm·Oe) at a frequency of 1 kHz.

scholarly journals Long-Term Converse Magnetoelectric Response of Actuated 1-3 Multiferroic Composite Structures

2021 ◽  
Vol 7 (4) ◽  
pp. 55
Author(s):  
Ryan Stampfli ◽  
Nha Uyen Huynh ◽  
George Youssef
Keyword(s):  
Lead Zirconate Titanate ◽  
Composite Structures ◽  
Lead Zirconate ◽  
Significant Research ◽  
Post Test ◽  
Magnetoelectric Materials ◽  
Multiferroic Composite ◽  
Magnetoelectric Response ◽  
Term Performance

Multiferroic composite materials operating under the principle of strain mediation across the interfaces separating different material boundaries address many limitations of single-phase magnetoelectric materials. Although significant research has been conducted to explore their responses relating to the topography and directionality of material polarization and magnetic loading, there remain unanswered questions regarding the long-term performance of these multiferroic structures. In this study, a multiferroic composite structure consisting of an inner Terfenol-D magnetostrictive cylinder and an outer lead zirconate titanate (PZT) piezoelectric cylinder was investigated. The composite was loaded over a 45-day period with an AC electric field (20 kV/m) at a near-resonant frequency (32.5 kHz) and a simultaneously applied DC magnetic field of 500 Oe. The long-term magnetoelectric and thermal responses were continuously monitored, and an extensive micrographic analysis of pretest and post-test states was performed using scanning electron microscopy (SEM). The extended characterization revealed a significant degradation of ≈30–50% of the magnetoelectric response, whereas SEM micrographs indicated a reduction in the bonding interface quality. The increase in temperature at the onset of loading was associated with the induced oscillatory piezoelectric strain and accounted for 28% of the strain energy loss over nearly one hour.

Temperature Characteristics of Magnetoelectric Effect in Bilayer Ferromagnetic-Piezoelectric Structures

2015 ◽  
Vol 233-234 ◽  
pp. 357-359 ◽  
Author(s):  
Dmitry Burdin ◽  
Dmitry Chashin ◽  
Nikolay Ekonomov ◽  
Yuri Fetisov
Keyword(s):  
Magnetic Field ◽  
Resonant Frequency ◽  
Temperature Dependence ◽  
Lead Zirconate Titanate ◽  
Magnetoelectric Effect ◽  
Lead Zirconate ◽  
Magnetic Field Sensors ◽  
Temperature Characteristics ◽  
Magnetoelectric Coefficient ◽  
Piezoelectric Structures

Temperature characteristics of resonant magnetoelectric effect in bilayer structures consisting of langatate, lead zirconate titanate, nickel, and amorphous ferromagnetic Metglas layers have been investigated. The measurements were performed in the temperature range of 150-400 K. The influence of the ferromagnetic and piezoelectric layer’s parameters on the temperature dependence of resonant frequency and magnetoelectric coefficient αE has been demonstrated. The results can be used to develop magnetoelectric magnetic field sensors.

Transverse Magnetoelectric Effect in Nickel Zinc Ferrite-Lead Zirconate Titanate Layered Composites

2014 ◽  
Vol 1061-1062 ◽  
pp. 184-188 ◽  
Author(s):  
Hong Xia Cao ◽  
Qian Shi ◽  
Jia Yang You ◽  
Yu Fang ◽  
Huang Sun
Keyword(s):  
Lead Zirconate Titanate ◽  
Zinc Ferrite ◽  
Magnetoelectric Effect ◽  
Coupling Parameter ◽  
Sol Gel ◽  
Lead Zirconate ◽  
Layered Composites ◽  
Nickel Zinc ◽  
Voltage Coefficient ◽  
Zirconate Titanate

By using a elastic mechanics model the transverse magnetoelectric voltage coefficient of magnetostrictive-piezoelectric bilayer is derived according to the constitutive equations. The transverse magnetoelectric coupling of nickel zinc ferrite-lead zirconate titanate (Ni0.8Zn0.2Fe2O4–Pb (Zr,Ti)O3, NZFO-PZT) layered composites were calculated by using the corresponding material parameters of individual phases. NZFO samples have been synthesized with sol–gel technique. Layered composites NZFO-PZT and NZFO-PZT-NZFO have been fabricated by binding discs of NZFO and commercially available PZT, and the transverse magnetoelectric effect have been investigated. The peak value of transverse magnetoelectric voltage coefficient for NZFO-PZT-NZFO trilayer reaches 252.4 mV/cmOe under a bias magnetic field of about 320 Oe, which is about three times as large as that of NZFO-PZT bilayer. The interface coupling parameter of trilayer is significantly higher than that of bilayer.

Monitoring Vibrating Structures Using PZT Impedance Transducers

2008 ◽  
Vol 47-50 ◽  
pp. 85-88
Author(s):  
Ai Wei Miao ◽  
Yao Wen Yang
Keyword(s):  
Experimental Study ◽  
Lead Zirconate Titanate ◽  
Health Monitoring ◽  
Lead Zirconate ◽  
Frequency Range ◽  
External Excitation ◽  
Real Situation ◽  
Electromechanical Impedance ◽  
Structural Health ◽  
Vibrating Structures

Electromechanical impedance (EMI) technique using lead zirconate titanate (PZT) transducers has been increasingly applied to structural health monitoring (SHM) of aerospace, civil and mechanical structures. The PZT transducers are usually surface bonded to or embedded in a structure and subjected to actuation so as to interrogate the structure at the desired frequency range. The interrogation results in the electromechanical admittance (inverse of EMI) signatures which can be used to estimate the structural health or integrity according to the changes of the signatures. In the existing EMI method, the monitored structure is only excited by the PZT transducers for the interrogating of EMI signature, while the vibration of the structure caused by the external excitations other than the PZT actuation is not considered. However, in real situation many structures work under vibrations. To monitor such structures, issues related to the effects of vibration on the EMI signature need to be addressed because these effects may lead to misinterpretation of the structural health. This paper develops an EMI model for beam structures, which takes into account the effect of beam vibration caused by the external excitations. An experimental study is carried out to verify the theoretical model. A Lab sized specimen with external excitation is tested and the effect of excitation on EMI signature is discussed.

Poling Field Dependence of Ferroelectric Domains in Tetragonal Lead Zirconate Titanate Ceramics

1996 ◽  
Vol 35 (Part 1, No. 9B) ◽  
pp. 5232-5235 ◽  
Author(s):  
Ayako Yamada ◽  
Yul-Kyo Chung ◽  
Masahiro Takahashi ◽  
Toshio Ogawa
Keyword(s):  
Field Dependence ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Poling Field ◽  
Zirconate Titanate ◽  
Ferroelectric Domains ◽  
Titanate Ceramics

Low-frequency and resonance magnetoelectric effects in lead zirconate titanate and single-crystal nickel zinc ferrite bilayers

2007 ◽  
Vol 22 (8) ◽  
pp. 2130-2135 ◽  
Author(s):  
V. Gheevarughese ◽  
U. Laletsin ◽  
V.M. Petrov ◽  
G. Srinivasan ◽  
N.A. Fedotov
Keyword(s):  
Single Crystal ◽  
Lead Zirconate Titanate ◽  
Low Frequency ◽  
Bias Field ◽  
Lead Zirconate ◽  
Field Orientation ◽  
Nickel Zinc ◽  
Voltage Coefficient ◽  
Zirconate Titanate ◽  
Zn Concentration

The nature of magnetoelectric (ME) interactions has been investigated in lead zirconate titanate (PZT) and (111) or (110) single-crystal nickel zinc ferrites. Data on the dependence of low-frequency ME voltage coefficients on static magnetic field orientation show (i) highest ME coefficients for bias field H along [100] and the smallest for H parallel to [110] and (ii) strongest ME interactions for transverse fields and for samples with Zn concentration of 0.3. Measurements on frequency dependence of ME coefficients reveal resonance enhancement due to bending and radial acoustic modes. The highest voltage coefficient is measured for radial modes in a sample with Zn concentration of 0.2. Theoretical estimates of low-frequency and resonance ME parameters are in very good agreement with data.

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