Title :
Electromagnetic Field Computation of Helmholtz Coils for Sensitivity Analysis of GMR Sensor
Author :
Mukhopadhyay, S.C.
Author_Institution :
Massey Univ., Palmerston North
Abstract :
The main purpose of this work is to simulate the possibility of measurement of density dependent relative magnetic permeability of ferrofluid using a high performance giant magneto-resistive (GMR) sensor. The circular type Helmholtz coils have been used for the generation of uniform magnetic field inside the region under consideration. The relative magnetic permeability of ferrofluid is very close to 1 and is dependent on the density of magnetic particles. The electromagnetic field has been analysed to determine the sensitivity of the GMR sensor
Keywords :
Helmholtz equations; coils; electric sensing devices; electromagnetic fields; giant magnetoresistance; magnetic fields; magnetic fluids; magnetic particles; magnetic permeability; magnetic sensors; sensitivity analysis; GMR sensor; Helmholtz coils; density dependent relative magnetic permeability; electromagnetic field computation; ferrofluids; giant magnetoresistive sensors; magnetic particle density; sensitivity analysis; uniform magnetic field; Coils; Computational modeling; Density measurement; Electromagnetic fields; Electromagnetic measurements; Magnetic field measurement; Magnetic particles; Magnetic sensors; Permeability measurement; Sensitivity analysis;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1632987
