Journal
IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume 67, Issue 3, Pages 1323-1326Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2020.2969988
Keywords
Electrets; energy conversion; magnetoelectric (ME) effects; magnetostriction
Funding
- National Key Research and Development Program of China [2017YFF0204701]
- National Natural Science Foundation of China [51771175]
- Zhejiang Provincial Natural Science Foundation of China [LZ19A020001, LY19A040006, LY17A040010]
- Open Project Funding of Institute of Flexible Electronics Technology of THU [2019KF1001]
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A new magnetoelectric (ME) sensing combination based on a magnetostrictive Terfenol-D rod and electret membrane has been proposed. AC signal and dc bias magnetic field dependences of the induced ac voltage were investigated using the traditional dynamic ME measurement. The results show that the induced ac voltage is strongly dependent on the applied ac signal and dc bias magnetic field. A significant ME response with high sensitivity and high tunability was obtained, and the optimized ME voltage output with high output power is observed for a zero bias dc magnetic field. The minimum limit of detection and maximum dc bias field tunability are 0.056 mA (or 5.27 x 10(-7) T) and 98.42%, respectively. In addition, both the induced ac voltage and output power are strongly dependent on the frequency of the driving ac signal magnetic field. A wide working frequency range and high energy conversion efficiency are observed with this combination. These findings not only provide insight into the dynamic measurement of ME response beyond ME materials but also provide a new type of sensing combination, possessing potential application in ME sensors, energy converters, switches, and magnetic detectors.
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