Output characteristics in Fe-Pd/PZT/Fe-Pd Magneto-electric composites with Fe-Pd thick layer

Takeshi Kubota, Teiko Okazaki, Naoto Endo, Kosuke Mikami, Yasubumi Furuya

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Magneto-electric (ME) characteristics of the ferromagnetic/ferroelectric Fe70Pd30/PZT/Fe70Pd30thin composites were investigated. The ME composites composed of the ferroelectric PZT phase (center layer, t: 260 μm) and the ferromagnetic, magnetostrictive Fe 70Pd30phase (t: 30-90 μm) glued on both the surfaces of PZT were fabricated. The rapidly solidified Fe70Pd 30ribbon mainly consists of fct martensitic phase with a large magnetostriction and fcc austenite (parent) phase. According to the DC bias magnetic field dependency of the output ME voltage (Vme) at an AC magnetic field of 1.0 Oe with an operation frequency of 1 kHz for the composites, the increasing in thickness of magnetostrictive layers showed remarkable improvement of Vmevalues. For the composite with 90 μm Fe-Pd layers, maximum Vmevalue of 13.9 mV was obtained at 60 Oe of the DC field, which is about two times higher than that of the composite with 30 μm Fe-Pd layers. Additionally the Vmevalue of the serial circuit was monotonically enhanced by the serial circuit connection, and the composites exhibited a very large peak at a resonant frequency of 61-68 kHz.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalSensors and Actuators, A: Physical
Volume200
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Magnetic sensor
  • Magnetoelectric coupling
  • Magnetostrictive Fe-Pd alloy
  • Multi-ferroic composite
  • Rapidly solidified ribbon

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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