Bidirectional current-voltage converters based on magnetostrictive/ piezoelectric composites

Yanmin Jia, Siu Wing Or, Helen Lai Wa Chan, Jie Jiao, Haosu Luo, S. Van Der Zwaag

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


We report a power supply-free, bidirectional electric current-voltage converter based on a coil-wound laminated composite of magnetostrictive alloy and piezoelectric crystal. An electric current applied to the coil induces a magnetic field, resulting in an electric voltage from the composite due to the direct magnetoelectric effect. Conversely, an electric voltage applied to the composite produces a magnetic induction due to the converse magnetoelectric effect, leading to an electric current from the coil. The converter exhibits excellent linear relationships between current and voltage. Compared with traditional current/voltage converters made by operational amplifiers, the advantages of the proposed device include low cost, no power consumption, and bidirectional conversion.
Original languageEnglish
Article number263504
JournalApplied Physics Letters
Issue number26
Publication statusPublished - 13 Jul 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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