Noise power spectral density in single strip NiFeCo/Cu GMR sensors

Author

Md Nor, A.F. ; Hill, E.W.

Author_Institution

Sch. of Eng., Manchester Univ., UK

fYear

2002

Abstract

Summary form only given. Noise power spectral density measurements were performed in single strip NiFeCo/Cu GMR sensors for various widths ranging from 2 /spl mu/m to 20 /spl mu/m. Two frequency ranges were used for noise investigations which are from 0.1 Hz to 100 Hz and from 10 Hz to 10 kHz. The power spectrum of the noise was obtained at various bias fields in the absence and presence of an alternating external signal. In order to obtain accurate and repeatable data a program was developed using Labview/sup TM/ to automate the power spectrum measurements.

Keywords

cobalt alloys; copper; ferromagnetic materials; giant magnetoresistance; iron alloys; magnetic sensors; magnetoresistive devices; nickel alloys; 0.1 to 100 Hz; 10 Hz to 10 kHz; 2 to 20 micron; Labview; NiFeCo-Cu; alternating external signal; automated measurements; bias fields; noise power spectral density; single strip GMR sensors; Conductivity; Frequency; Giant magnetoresistance; Magnetic field measurement; Noise figure; Noise measurement; Optical films; Optical reflection; Strips; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International

Conference_Location

Amsterdam, The Netherlands

Print_ISBN

0-7803-7365-0

Type

conf

DOI

10.1109/INTMAG.2002.1001242

Filename

1001242