Theoretical analysis of the intrinsic magnetic noise spectral density of magntostrictive-piezoelectric laminated compositesReport as inadecuate




Theoretical analysis of the intrinsic magnetic noise spectral density of magntostrictive-piezoelectric laminated composites - Download this document for free, or read online. Document in PDF available to download.

1 Equipe Electronique - Laboratoire GREYC - UMR6072 GREYC - Groupe de Recherche en Informatique, Image, Automatique et Instrumentation de Caen 2 Department of Materials Science and Engineering

Abstract : The equivalent magnetic noise spectral density level for long type magnetostrictive-piezoelectric laminated composites has been investigated by using a 1D equivalent circuit model, and exemplified for a longitudinal-transverse mode. The theoretical developments explain well our experimental results. The findings show that similar ultimate magnetic noise spectral noise density can be expected whether using either charge or voltage amplifier detection methods. The findings show that a volume effect and the dielectric loss factor of the piezoelectric layer are the dominant sources of the noise floor. Our findings show that the noise scales as 1-√f. The lowest equivalent noise floor value that has been observed is 10-√f pT-√Hz for f ≪ 10 kHz, with a white noise level of 100 fT-√Hz above 10 kHz.





Author: Xin Zhuang - Christophe Cordier - Sebastien Saez - Marc Lam Chok Sing - Christophe Dolabdjian - Junqi Gao - Jiefang Li - Dwight V

Source: https://hal.archives-ouvertes.fr/



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