Magnetoelectric effect in layered composites with arc shape

Abstract

Magnetoelectric (ME) layered Ni/PZT/Ni composites with arc shape have been prepared by using electroless deposition. The ME effect is measured by applying both constant and alternating magnetic fields in longitudinal and transverse directions. The longitudinal ME voltage coefficient is much larger than the transverse one. With the increase of arc length or decrease of curvature, the resonance frequency of layered arc Ni/PZT/Ni composites gradually decreases, while the maximum of the ME voltage coefficient of the composites increases monotonously. The influence of the arc length and the curvature on ME coupling is discussed. The flat interface between the ferromagnetic and the piezoelectric phases in layered ME composites is believed to provide large ME voltage coefficient.

Self-biased magnetoelectric responses in magnetostrictive/piezoelectric composites with different high-permeability alloys

“…In the past few years, large resonant ME responses have been reported in composites of piezoelectric Pb(Zr,Ti)O 3 (PZT) or Pb(Mg 1/3 Nb 2/3 )O 3 layers laminated with magnetostrictive Terfenol-D, FeNi, Ni, or metglas ones. [7][8][9][10][11] In order to enable potential applications, efforts for enhancing the ME responses have been made in various aspects. [11][12][13] Unfortunately, the ME composites require the presence of external dc bias magnetic field H dc for achieving large ME responses.…”

Interface Effects on the Magnetoelectric Properties of Magnetoelectric Multilayer Composites

“…The same value of the dielectric permeability p 𝜀 33 of the two PZT plates can be achieved by Eq. (10). Thus the dielectric permeability p 𝜀 33 does not effect the ME voltage coefficient 𝛼 𝐸,31 in this experiment.…”

Ferroelectricity in hexagonal YFeO 3 film at room temperature

“…[1][2][3][4] Meanwhile, they are promising materials in multiple-state memories, electric-field-controlled ferromagnetic resonance devices, and transducers with magnetically modulated piezoelectricity due to the magnetoelectric effect. [5][6][7] However, materials of this kind are very rare, as the two contrasting order parameters of ferroelectricity and magnetism are mutually exclusive. [2,3] Besides, most of them reveal multiferroic properties far below room temperature.…”