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An Extremely Low Equivalent Magnetic Noise Magnetoelectric Sensor
Author(s) -
Wang Yaojin,
Gray David,
Berry David,
Gao Junqi,
Li Menghui,
Li Jiefang,
Viehland Dwight
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201100773
Subject(s) - metglas , materials science , noise (video) , magnetic field , magnetic noise , sensitivity (control systems) , low frequency , nuclear magnetic resonance , magnetostriction , magnetoelectric effect , acoustics , condensed matter physics , optoelectronics , physics , composite material , electronic engineering , artificial intelligence , multiferroics , computer science , dielectric , image (mathematics) , ferroelectricity , electromagnetic shielding , quantum mechanics , astronomy , engineering
Extremely low equivalent magnetic noise in a Metglas/piezofiber magnetoelectric (ME) magetic‐field sensor, realized through a combination of a giant ME effect and a reduction in constituent internal noise sources, is demonstrated. The ME coefficient is 52 V cm −1 Oe −1 at low frequency, the 1 Hz equivalent magnetic noise is 5.1 pT Hz −1/2 , and the magnetic field sensitivity is 10 nT.