Title :
GMR signal of Co-Ag layered structures in dynamic conditions of measurement
Author :
Ac, V. ; Anwarzai, B. ; Luby, S. ; Majkova, E. ; Senderak, R.
Author_Institution :
Fac. of Mechatronics, Trencin Univ. of Alexander Dubcek, Slovakia
Abstract :
The signal response in layered giant magnetoresistance (GMR) structures is studied in an external ac magnetic field at 50 Hz with an increasing amplitude swing. Co-Ag multilayers (MLs) were evaporated onto Si substrates. The thickness of Co and Ag layers was 1.2 nm and 5.5 nm, respectively. MLs with only N=2, 3, 4 periods were fabricated to expose the relative higher influence of top and bottom ferromagnetic Co layers of ML having a higher density of magnetic flux than the central layers. Experimental results are explained in terms of simulations of inhomogeneous magnetic field distribution in ML. Simulations were performed by an appropriate software tool. The results are of some relevance for the design and applications of smart magnetic GMR sensors.
Keywords :
cobalt; ferromagnetic materials; giant magnetoresistance; magnetic multilayers; silver; 1.2 nm; 5.5 nm; 50 Hz; Co-Ag; Co-Ag layered structures; GMR; Si; evaporated multilayers; ferromagnetic Co layers; inhomogeneous magnetic field distribution; layer thickness; layered giant magnetoresistance structures; smart magnetic GMR sensors; Application software; Giant magnetoresistance; Intelligent sensors; Magnetic field measurement; Magnetic fields; Magnetic flux; Magnetic multilayers; Magnetic sensors; Multilevel systems; Software tools;
Conference_Titel :
Advanced Semiconductor Devices and Microsystems, 2002. The Fourth International Conference on
Print_ISBN :
0-7803-7276-X
DOI :
10.1109/ASDAM.2002.1088508
