Electromechanical Resonance in Magnetoelectric Composites: Direct and Inverse Effect

2012 ◽  
Vol 189 ◽  
pp. 129-143 ◽  
Author(s):  
Mirza I. Bichurin ◽  
Vladimir M. Petrov ◽  
Roman V. Petrov ◽  
Shashank Priya
Keyword(s):  
Magnetic Field ◽  
Lead Zirconate Titanate ◽  
Magnetic Layer ◽  
Resonance Region ◽  
Acoustic Resonance ◽  
Lead Zirconate ◽  
Voltage Coefficient ◽  
Zirconate Titanate ◽  
Resonance Frequencies ◽  
Electromechanical Resonance

Magnetoelectric (ME) coupling in the composites is mediated by the mechanical stress and one would expect orders of magnitude stronger coupling when the frequency of the ac field is tuned to acoustic mode frequencies in the sample than at non-resonance frequencies. A model is presented for the increase in ME coupling in magnetostrictive-piezoelectric bilayers for the longitudinal, radial, and bending modes in the electromechanical resonance region. We solved the equation of medium motion taking into account the magnetostatic and elastostatic equations, constitutive equations, Hooke's law, and boundary conditions. We estimated the ME voltage coefficient for direct ME effect and ME susceptibility for inverse ME coupling. The frequency dependence of the ME voltage coefficient and ME susceptibility reveals a resonance character in the electromechanical resonance region. Then we considered ME interaction in the magneto-acoustic resonance region at the coincidence of electromechanical and magnetic resonance. Variation in the piezomagnetic coefficient with static magnetic field for magnetic layer results in a dependence of ME voltage on applied bias magnetic field. As an example, we considered specific cases of cobalt ferrite or yttrium-ferrum garnet - lead zirconate titanate and nickel/permendur - lead zirconate titanate bilayers. Estimated values of ME voltage coefficient versus frequency profiles are in agreement with data.

scholarly journals Особенности магнитоэлектрического эффекта в структурах пермендюр-кварц-пермендюр в области электромеханического резонанса

2019 ◽  
Vol 45 (9) ◽  
pp. 16
Author(s):  
В.М. Лалетин ◽  
Д.А. Филиппов ◽  
Н.Н. Поддубная ◽  
И.Н. Маничева ◽  
G. Srinivasan
Keyword(s):  
Lead Zirconate Titanate ◽  
Magnetoelectric Effect ◽  
Resonance Region ◽  
Lead Zirconate ◽  
Anomalous Behavior ◽  
Q Factor ◽  
Experimental Frequency ◽  
Voltage Coefficient ◽  
Zirconate Titanate ◽  
Electromechanical Resonance

AbstractThe experimental frequency and field dependences of the magnetoelectric effect in three-layer permendur–quartz–permendur structures in the region of electromechanical resonance were studied. It was found that the magnetoelectric voltage coefficient and the Q-factor of these structures in the resonance region are much higher than those of similar structures based on lead zirconate titanate. Anomalous behavior of the field dependences of the magnetoelectric voltage coefficient and the Q-factor was observed in the region of electromechanical resonance. This feature is attributable to the negative Δ E effect.

Magnetoelectric Effect in Ferrite-Piezoelectric Dual-Phase Structure

2015 ◽  
Vol 233-234 ◽  
pp. 353-356
Author(s):  
Roman V. Petrov ◽  
Alexander S. Tatarenko ◽  
Vladimir M. Petrov ◽  
Mirza I. Bichurin
Keyword(s):  
Energy Transfer ◽  
Lead Zirconate Titanate ◽  
Magnetoelectric Effect ◽  
Resonance Region ◽  
Lead Zirconate ◽  
Dual Phase ◽  
Theoretical Frequency ◽  
Voltage Coefficient ◽  
Piezoelectric Structure ◽  
Electromechanical Resonance

This manuscript is devoted to the magnetoelectric coupling in a dimensionally graded magnetostrictive-piezoelectric structure in the electromechanical resonance region. Theoretical frequency dependence of ME voltage coefficient is obtained. Theoretical estimates for the layered structure of lead zirconate-titanate and single-crystal Zn0,3Ni0,7Fe2O4 are in satisfactory agreement with data. The obtained results are expected to facilitate observation of enhanced ME coupling at overlapping of electromechanical and magnetic resonance due to energy transfer between spin waves and phonons.

A Study of Antiferromagnetic-Pinned Multiferroic Composites Nano Read Head

2016 ◽  
Author(s):  
Salinee Choowitsakunlert ◽  
Rardchawadee Silapunt ◽  
Hideki Yokoi
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Piezoelectric Response ◽  
Potential Candidate ◽  
Zirconate Titanate ◽  
Read Head ◽  
Maximum Electric Field

This paper presents a study of the effect of antiferromagnetic (AFM) integration on the nano AFM-pinned multiferroic (MF) composites structure. The nano MF composites structure is a potential candidate for a future magnetic read head. The simulation of the AFM/ferromagnetic (FM) bilayers characteristics and the evaluation of the magnetoelectric (ME) effect induced in the 1-dimensional (1D) L-T mode model of AFM-pinned structure of AFM/FM/Ferroelectric (FE)/FM/AFM are performed. FM, FE, and two types of AFM materials are Terfenol-D, lead zirconate titanate (PZT), and PtMn and Cr2O3, respectively. The magnetoelectric (ME) effect is investigated using the 1D standard square law. Magnetic-field induced strain in the FM layer, piezoelectric response of the PZT layer, and the ME coefficient are determined. Specifically, the influence of AFM on the MF composites structure for various AFM thicknesses is of interest. It is found that the maximum electric field and potential across the PZT layer are achieved at 2.7 nm thick of PtMn. The result is well agreed by associated magnetic field-induced strain and ME coefficient.

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.

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.

scholarly journals Magnetopiezofiber

2019 ◽  
Vol 30 ◽  
pp. 07015
Author(s):  
Sergey Ivanov ◽  
Gennady Semenov ◽  
Denis Kovalenko
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Lead Zirconate Titanate ◽  
Magnetoelectric Effect ◽  
Lead Zirconate ◽  
Effect Study ◽  
Frequency Range ◽  
Field Range ◽  
Voltage Coefficient ◽  
Maximum Value

The results of the magnetoelectric effect study in the magnetopiezofiber are presented. Magnetopiezofiber consists of mechanically coupled piezoelectric (one layer of lead zirconate titanate) and magnetostrictive (two metglass layers) fibers. The layers were joined together by epoxy under pressure and heating. The sample active area dimensions were 28x7x0,34 mm. The study of the magnetoelectric effect was carried out in the frequency range from 0 to 150 kHz and external magnetic field range from 0 to 100 Oe. Maximum value of the ME voltage coefficient αE = 62,75 V/cm-Oe was measured on the electromechanical resonance frequency f = 61 kHz with an external magnetic field of 4,5 Oe. Obtained results indicate the prospects of the proposed design in magnetoelectric devices application.

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