Ausanio, Giovanni and Iannotti, Vincenzo and Lanotte, Luciano (2009) Giant magnetic induction in magneto-elastic resonators and its application for magnetic field sensors. [Pubblicazione in rivista scientifica]

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Tipologia del documento: Pubblicazione in rivista scientifica
Lingua: English
Titolo: Giant magnetic induction in magneto-elastic resonators and its application for magnetic field sensors
Autori:
AutoreEmail
Ausanio, Giovanni[non definito]
Iannotti, Vincenzo[non definito]
Lanotte, Luciano[non definito]
Autore/i: Ausanio G; Iannotti V; Lanotte L
Data: 2009
Numero di pagine: 4
Dipartimento: Scienze fisiche
Titolo del periodico: SENSORS AND ACTUATORS. A, PHYSICAL
Data: 2009
Volume: 153
Numero: 2
Intervallo di pagine: pp. 162-165
Numero di pagine: 4
Depositato il: 21 Ott 2010 06:57
Ultima modifica: 30 Apr 2014 19:43
URI: http://www.fedoa.unina.it/id/eprint/7497

Abstract

The competitive performance of an optimized magneto-elastic resonator as sensor of a local magnetic field is reported. The resonator core is constituted by an amorphous ferromagnetic ribbon in which stationary waves are established by means of magneto-elastic coupling. The appropriate choice of the ribbon composition and the use of a special heat treatment are determinant on the sensor response. In proper conditions, the sensitive parameter, namely the electromotive force (root mean square value) induced in a miniaturized pick-up coil, has relative changes of 10^4 for a magnetic field increment of 10 A/m. Magnetic induction fields as small as 10^−8 T can be measured with a technology simpler than in other used devices. A good linearity of the sensor response at low field (from 0 A/m up to 50 A/m) is demonstrated too.

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