Large Magnetoelectric Effect in FeCuNbSiB/FeGa/PZT Multilayer Composite at Low Optimum Bias

Author

Chao Yang ; Ping Li ; Yumei Wen ; Caijiang Lu ; Aichao Yang ; Decai Wang ; Jitao Zhang ; Feng Zhang

Author_Institution

Res. Center of Sensors & Instrum., Chongqing Univ., Chongqing, China

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

We report a large magnetoelectric (ME) effect in FeCuNbSiB/FeGa/PZT multilayer composite at low optimum bias magnetic field (Hdc). Due to the great differences in the magnetic permeability and coercivity between FeCuNbSiB foils and FeGa alloys, the strong magnetization gradients are achieved, which induce an additional internal magnetic field in FeGa alloys. As a result, the optimum Hdc of FeGa/PZT composite decreases dramatically by attaching multilayer FeCuNbSiB foils. The experimental results demonstrate that: 1) the optimum Hdc of FeCuNbSiB/FeGa/PZT composite with one layer FeCuNbSiB foil reaches 62 Oe, which is only one-tenth of that of FeGa/PZT composite (606Oe); 2) the maximum ME voltage coefficient (MEVC) at resonance (α_ME,r) of FeCuNbSiB/FeGa/PZT composite with four-layer FeCuNbSiB foils can reach 115.8V/cm Oe, which is ~2.3 times higher than that of FeGa/PZT composite; and 3) the maximum zero-biased MEVC at resonance (α_ME,zero) is up to 58.2 V/cm Oe for FeCuNbSiB/FeGa/PZT composite with four-layer FeCuNbSiB foils. It provides great opportunities for such potential applications as the small-size and high-performance magnetic field sensors.

Keywords

boron alloys; coercive force; copper alloys; foils; gallium alloys; iron alloys; lead compounds; magnetic multilayers; magnetic permeability; magnetoelectric effects; magnetostriction; niobium alloys; silicon alloys; FeCuNbSiB-FeGa-PZT; coercivity; four-layer foil; high-performance magnetic field sensors; internal magnetic field; large magnetoelectric effect; low optimum bias magnetic field; magnetic permeability; maximum ME voltage coefficient; maximum zero-biased MEVC; multilayer composite; small-size magnetic field sensors; strong magnetization gradients; Magnetic multilayers; Magnetic resonance; Magnetoelectric effects; Magnetostriction; Metals; Saturation magnetization; Fe-based nanocrystalline material; large magnetoelectric (ME) effect; low optimum bias magnetic field; magnetostrictive material;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2330069

Filename

6971810