Highly efficient solid state magnetoelectric gyrators
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 18, 2017
- Source ID
- 10.1063/1.4996242
Entities
People
- Chung Ming Leung
- D. Viehland
- Daniel Friedrichs
- Gopalakrishnan Srinivasan
- Jiefang Li
- M. A. Popov
- Robert W. Erickson
- V. Laletin
- Xin Zhuang
Organizations
- Defense Advanced Research Projects Agency
- Oakland University
- University of Colorado
- Virginia Tech