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Magnetoelectric laminate based DC magnetic field sensor
Author(s) -
Karmarkar Makarand,
Dong Shuxiang,
Li Jiefang,
Viehland Dwight,
Priya Shashank
Publication year - 2008
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200802020
Subject(s) - magnetostriction , materials science , piezoelectricity , magnetic field , transformer , waveform , voltage , composite material , stress (linguistics) , stiffness , acoustics , electrical engineering , physics , engineering , linguistics , philosophy , quantum mechanics
We report on a DC magnetic field sensor that utilizes magnetoelectric (ME) laminate composites. It consists of a ring‐dot piezoelectric transformer laminated to a magnetostrictive disc. When a constant voltage is applied to the ring section of the piezoelectric layer at resonance, a stress is induced in the dot section. Then, if an external magnetic object is introduced in the vicinity of the dot section, the effective elastic stiffness is increased, altering the resonance frequency. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)