Title :
Effects of flux concentrators on the low frequency noise in magnetoresistive sensing devices
Author :
Nowak, E. ; Ozbay, A. ; Edelstein, A. ; Fischer, G. ; Nordman, C. ; Cheng, S.
Author_Institution :
Univ. of Delaware, Newark
Abstract :
This paper investigated the effects of flux concentrators (FCs) on magnetic 1/f noise in magnetoresistive sensing devices. This is done by comparing results for the cases of bare (without FCs) sensors and those with FCs. It is shown that FCs can be a source of broad-band low frequency noise in AC MEMS flux concentrator device when the signal modulation amplitudes are sufficiently high.
Keywords :
1/f noise; giant magnetoresistance; magnetic flux; magnetic noise; magnetic sensors; microsensors; spin valves; AC MEMS flux concentrator; GMR spin-valve sensor; broad-band low frequency noise; magnetic 1/f noise; magnetoresistive sensor; Amplitude modulation; Fluctuations; Frequency; Giant magnetoresistance; Laboratories; Low-frequency noise; Magnetic noise; Magnetic sensors; Micromechanical devices; Sensor phenomena and characterization;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.374914
