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Highly efficient solid state magnetoelectric gyrators

  • Chung Ming Leung*
  • , Xin Zhuang
  • , Daniel Friedrichs
  • , Jiefang Li
  • , Robert W. Erickson
  • , V. Laletin
  • , M. Popov
  • , G. Srinivasan
  • , D. Viehland
  • *Corresponding author for this work
  • Virginia Polytechnic Institute and State University
  • University of Colorado Boulder
  • Oakland University

Research output: Contribution to journalArticlepeer-review

Abstract

An enhancement in the power-conversion-efficiency (η) of a magneto-electric (ME) gyrator has been found by the use of Mn-substituted nickel zinc ferrite. A trilayer gyrator of Mn-doped Ni0.8Zn0.2Fe2O3 and Pb(Zr,Ti)O3 has η = 85% at low power conditions (∼20 mW/in3) and η ≥ 80% at high power conditions (∼5 W/in3). It works close to fundamental electromechanical resonance in both direct and converse modes. The value of η is by far the highest reported so far, which is due to the high mechanical quality factor (Qm) of the magnetostrictive ferrite. Such highly efficient ME gyrators with a significant power density could become important elements in power electronics, potentially replacing electromagnetic and piezoelectric transformers.

Original languageEnglish
Article number122904
JournalApplied Physics Letters
Volume111
Issue number12
DOIs
StatePublished - 18 Sep 2017
Externally publishedYes

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