Co-fired magnetoelectric transformer

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Abstract

In this study, we demonstrate a co-fired magnetoelectric (ME) laminate consisting of piezoelectric/magnetostrictive/piezoelectric layers with unipoled piezoelectric transformer structure. The ME transformer was characterized by quantifying the voltage gain variation and resonance frequency shift as a function of applied DC magnetic field. We delineate the magnetic tunability feature by considering the magnetoelectric coupling and delta-E effect, where E represents the modulus of magnetic material. The ME response of the composite structure was found to be 473 mV/cm.Oe exhibiting DC field sensitivity of 100 nT under AC field of 1 Oe at 1 kHz. At a magnetic bias of 60 Oe, the transformer exhibited large frequency tunability of the order of 1.4 Hz/Oe. These results present significant advancement towards developing on-chip magnetic-field- tunable devices.

Original languageEnglish (US)
Article number232906
JournalApplied Physics Letters
Volume104
Issue number23
DOIs
StatePublished - Jun 9 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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