Wide magnetic field range of Ni-P/PZT/Ni-P cylindrical layered magnetoelectric composites

Abstract

The Ni-P/PZT/Ni-P cylindrical layered magnetoelectric (ME) composites were prepared by electroless deposition. The Ni-P layer has an amorphous nanocrystalline structure. The ME effect in the axial mode of the Ni-P/PZT/Ni-P cylindrical layered composites is similar to that of Ni/PZT/Ni. The Ni-P/PZT/Ni-P composite has lower bias magnetic field of 120 Oe to induce a maximum αE,A and 0.5 kOe to generate αE,A linear increase at the resonance frequency, which may be related to the high permeability of the Ni-P layer. This discovery contributes to the ME devices miniaturization and expands the magnetic field detection range at both low and high magnetic fields.

Bonded cylindrical Terfenol-D-epoxy/PZT magnetoelectric composites prepared by the one-step compression molding

“…[21][22][23][24] Typical characteristics of some representative ME composites are given in Table I. Comparing the advantages and disadvantages, it is valid to consider that substitute TDE for Ni to make a cylindrical composite can lead to better performance of the composite.…”

Improved magnetoelectric performance of the Ni-P/Ni/Pb(Zr,TiO)3 cylindrical layered composites

“…The bath composition and the deposition conditions of Ni electrodeposition and Ni-P electroless deposition are presented in detail elsewhere. 11,17 The phosphorus content of the Ni-P layers is approximately 7.78 wt. % with no impurities present, and the Ni-P layers have both micro-crystalline and amorphous structure.…”

“…The AC current flowing through the coils with the applied magnetic field amplitude of dH ¼ 1.2 Oe was equal to 1 A. 17 The magnetic field frequency dependence of the ME voltage coefficient, a E,A , at H m (respective) for the Ni/PZT, Ni-P/PZT, and Ni-P/Ni/PZT composites is presented in Fig. 2(a).…”

“…Nickel is a kind of universal strong magnetic material, while Ni-P alloy has amorphous nanocrystalline structure exhibiting new properties as high magnetic induction, high permeability and low loss. 17,18 Besides, it is convenient to prepare Ni and Ni-P alloys by electrodeposition and electroless deposition, respectively. These methods can avoid the disadvantages of nonrigid contact, fatigue and aging effect due to the polymer binder.…”

“…% with no impurities present, and the Ni-P layers have both micro-crystalline and amorphous structure. 17 For comparison, the Ni/PZT, Ni-P/PZT, and Ni-P/Ni/ PZT cylindrical layered composites were prepared and their geometrical arrangements are shown Schematically in Fig. 1.…”