Title :
D.C. magnetic field measurements based on the inverse Wiedemann effect in Fe-rich glass covered amorphous wires
Author :
Chiriac, H. ; Hristoforou, E. ; Neagu, Maria ; Darie, I. ; Barariu, Fimta
Author_Institution :
Nat. Inst. for Technol. Phys., Iasi, Romania
fDate :
9/1/1999 12:00:00 AM
Abstract :
Results concerning the dependence of the inverse Wiedemann effect (IWE) voltage in Fe77.5Si7.5B15 glass covered amorphous wire on the external DC magnetic field are presented. In the 0.01-0.015 mT and 0.02-0.03 mT ranges for torsion annealed and as-cast wires, respectively, there is a linear dependence of the IWE voltage on the DC magnetic field. The response sensitivity increases up to about 19 V/mT when the AC current frequency increases up to about 3 kHz. DC magnetic field sensing elements, based on the IWE effect, having small dimensions, very good mechanical and corrosion resistance can be realized using glass covered amorphous wires
Keywords :
Wiedemann effect; amorphous magnetic materials; boron alloys; corrosion protective coatings; ferromagnetic materials; glass; iron alloys; magnetic anisotropy; magnetic field measurement; magnetic sensors; sensitivity; silicon alloys; 0.01 to 0.03 mT; 3 kHz; DC magnetic field sensing elements; Fe-rich amorphous wires; Fe77.5Si7.5B15; Fe77.5Si7.5B15 wire; as-cast wires; corrosion resistance; glass covered amorphous wires; inverse Wiedemann effect; magnetic field measurement; mechanical resistance; response sensitivity; torsion annealed wires; Amorphous materials; Annealing; Corrosion; Frequency; Glass; Iron; Magnetic field measurement; Magnetic fields; Voltage; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
