Low frequency measurements in amorphous wire for studying GMI effect

Vourna, P

dc.contributor.author	Vourna, P	en
dc.date.accessioned	2014-03-01T02:53:53Z
dc.date.available	2014-03-01T02:53:53Z
dc.date.issued	2012	en
dc.identifier.issn	10139826	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36483
dc.subject	Amorphous wire	en
dc.subject	GMI effect	en
dc.subject	Low frequency	en
dc.subject	Magnetic materials	en
dc.subject.other	AC currents	en
dc.subject.other	AC input	en
dc.subject.other	AC signals	en
dc.subject.other	Amorphous magnetic wires	en
dc.subject.other	Amorphous wire	en
dc.subject.other	Applied magnetic fields	en
dc.subject.other	DC voltage	en
dc.subject.other	Frequency generators	en
dc.subject.other	Glass coating	en
dc.subject.other	GMI effects	en
dc.subject.other	Low frequency	en
dc.subject.other	Low frequency measurements	en
dc.subject.other	Non-Linearity	en
dc.subject.other	Output signal	en
dc.subject.other	Output voltages	en
dc.subject.other	Soft ferromagnetic materials	en
dc.subject.other	Wheatstone bridges	en
dc.subject.other	AC generator motors	en
dc.subject.other	Bridge circuits	en
dc.subject.other	Electric potential	en
dc.subject.other	Ferromagnetic materials	en
dc.subject.other	Magnetic fields	en
dc.subject.other	Magnetic materials	en
dc.subject.other	Sensors	en
dc.subject.other	Wire	en
dc.subject.other	Amorphous materials	en
dc.title	Low frequency measurements in amorphous wire for studying GMI effect	en
heal.type	conferenceItem	en
heal.identifier.primary	10.4028/www.scientific.net/KEM.495.201	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/KEM.495.201	en
heal.publicationDate	2012	en
heal.abstract	When a soft ferromagnetic material is flown by an ac current and a magnetic field is applied at the same time, a major change of its impedance is occurred. The aim of this paper is to investigate the influence of low frequency (1KHz-12KHz) ac current and the applied magnetic field on an amorphous magnetic wire (Co68Fe4.35Si12.5B15) without glass coating. For this purpose an experimental configuration has been setup, based on a Wheatstone bridge which receives an ac input signal from a frequency generator. The output is connected to the amorphous wire wrapped with a coil supplied by a dc voltage for the generation of the magnetic field. The output voltage pulse is measured for two cases a) The value of ac frequency is changing while the value of dc voltage applied to the coil remains constant (the magnetic field remains unchanged) and b) the magnetic field is changing while the ac frequency remains constant to a predefined value. Experimental results of the first scenario showed that when the frequency is altered a non-linear increase of the ac signal is observed at the output which shows an increase of the GMI effect and is related to the non-linearity of the wire's permeability. For the second scenario the results showed an increase of the output signal offset (voltage) which also indicates an increase of the GMI effect. © (2012) Trans Tech Publications.	en
heal.journalName	Key Engineering Materials	en
dc.identifier.doi	10.4028/www.scientific.net/KEM.495.201	en
dc.identifier.volume	495	en
dc.identifier.spage	201	en
dc.identifier.epage	204	en