Polarity of magnetic field related magnetoelectric effects in heterotypic composite system of lead zirconate titanate and Terfenol-D

2012 ◽  
Vol 324 (6) ◽  
pp. 995-998 ◽  
Author(s):  
J.S. Gao ◽  
N. Zhang ◽  
X.B. Luo
Author(s):  
Salinee Choowitsakunlert ◽  
Rardchawadee Silapunt ◽  
Hideki Yokoi

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.


2015 ◽  
Vol 378 ◽  
pp. 285-290 ◽  
Author(s):  
Rekha Rani ◽  
J.K. Juneja ◽  
Sangeeta Singh ◽  
K.K. Raina ◽  
Chandra Prakash

2012 ◽  
Vol 189 ◽  
pp. 129-143 ◽  
Author(s):  
Mirza I. Bichurin ◽  
Vladimir M. Petrov ◽  
Roman V. Petrov ◽  
Shashank Priya

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.


2013 ◽  
Vol 131 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
P. K. Sain ◽  
R. K. Goyal ◽  
A. K. Bhargava ◽  
Y.V.S.S. Prasad

Sign in / Sign up

Export Citation Format

Share Document