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Equivalent magnetic noise in magnetoelectric Metglas/Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 laminate composites
Author(s) -
Wang Yaojin,
Gray David,
Berry David,
Gao Junqi,
Li Jiefang,
Viehland D.,
Luo Haosu
Publication year - 2011
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.201105170
Subject(s) - metglas , noise (video) , condensed matter physics , dielectric , materials science , physics , charge (physics) , electrical engineering , nuclear magnetic resonance , magnetic field , magnetostriction , quantum mechanics , optoelectronics , artificial intelligence , computer science , engineering , image (mathematics)
We have experimentally and theoretically investigated the equivalent magnetic noise in a magnetoelectric Metglas/ 0.7Pb(Mg 1/3 Nb 2/3 )O 3 ‐0.3PbTiO 3 laminate sensor unit by considering the constituent noise sources of dielectric loss ( N DE ) and DC leakage resistance ( N R ). In the low frequency range ( f = 1 Hz), theory predicts that N R dominates the noise charge (1.6 times larger than N DE ), with a 1 Hz noise of 9.1\;{\rm pt}/\sqrt {\rm Hz}. The experimental equivalent magnetic noise was 10.8\;{\rm pt}/\sqrt {\rm Hz}. This observed value is slightly higher than the predicted one, which might be due to an oversimplification of the theoretical model in terms of electrical charge amplifier and external vibration noise sources. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)