Dependence of frequency and amplitude of the ac current on the GMI properties of Co based amorphous wires |
| |
| Affiliation: | 1. National Metallurgical Laboratory, Jamshedpur 831007, India;2. Department of Physics, Jadavpur University, Kolkata, India;1. Aalto University School of Engineering, Laboratory of Engineering Materials, PL 14200, Aalto FIN-00076, Finland;2. AdaptaMat Ltd., Yrityspiha 5, Helsinki FIN-00390, Finland;3. Institute of Physics, ASCR, Na Slovance 2, 182 02 Prague, Czech Republic;1. MST Division, CSIR-National Metallurgical Laboratory, Jamshedpur 831007, India;2. National Institute of Technology, Tiruchirappalli 620015, India;1. Universidad del País Vasco, UPV/EHU, San Sebastián, Spain;2. Laboratory of Magnetism, Faculty of Physics, University of Bialystok, 15-424 Bialystok, Poland;3. IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain;1. School of Physics Science and Information Engineering, Key Lab. of Communication Science and Technology of Shandong Province, Liaocheng University, Liaocheng 252059, China;2. Physics Department, Southeast University, Nanjing 211189, China;3. National Laboratory of Solid Microstructures, Nanjing University, Nanjing 210093, China;1. National University of Science and Technology, MISiS, Moscow, Russia;2. Institute for Design Problems in Microelectronics, RAN, Moscow, Russia;3. School of Computing and Mathematics, University of Plymouth, UK;1. MST Division, CSIR-National Metallurgical Laboratory, Jamshedpur 831007, India;2. Department of Metallurgical Engg., National Institute of Technology, Raipur 492010, India |
| |
| Abstract: | The frequency and the amplitude of the driving ac current dependence of the Giant Magneto-Impedance (GMI) behaviour in (Fe6Co94)72.5Si12.5B15 amorphous wire have been studied. The single and two-peak behaviour in the GMI characteristics are observed which depends on the amplitude and frequency of the ac driving current flowing through the sample. The GMI ratio initially increased and then decreased monotonically with the increase of frequency, f, and the amplitude of the ac current, Iac. With the increase of amplitude of ac current, the response of the GMI voltage is found non-linear with the generation of higher harmonics. With the increase of higher harmonics, the first harmonic component of the GMI voltage started decreasing. With the increase of the ac current, the field sensitivity of the first harmonic components of the GMI voltage decreases and in higher harmonics it shows an increasing trend. The maximum field sensitivity was observed 7.5% per A/m for Iac = 2 mA and at frequency 100 kHz. The paper investigates the response of the second and third harmonics with the frequencies and amplitude of the driving current. A voltage equation derived from the rotational model to study the response of the GMI voltage. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
