Demonstration performance magneto -impedance sensor on the coil wire multilayer [ Ni80Fe20 / Cu ] N electro -deposition results presented in this paper . At first multilayer [ Ni80Fe20 / Cu ] N deposited on a Cu wire into a coil and then the sample is modified by the number of windings 2 and 4. The results of impedance measurements under the influence of the magnetic field shows that the magnetoimpedance ratio increases with the increase in the number of windings. Magneto -impedance ratio changed from 15 % to 17.4% with a change in the number of windings of 2 to 4. The fact these results allegedly contributed their self-inductance value of this magnitude greater contribution to the increase in the number of windings.
Multilayer sensor sensitivity [Ni 80 Fe 20 /Cu] N as results of electro-deposition on Cu wire has been modified by several variables; namely (i) the frequency of measurement, (ii) the number of iteration N on the system [Ni 80 Fe 20 /Cu] N , and (iii) the thickness of the spacer layer of Cu. If applied as a magnetic sensor, the measured sensor sensitivity can be calculated using the formula; ξ = 2 [(ΔZ/Z)max]/ΔH. The results of the sensitivity calculations show that the increase in the ratio of magneto-impedance directly proportional to the sensitivity of the sensor. To modify the frequency of the sample [Ni 80 Fe 20 (800nm)/Cu(300 nm)] 3 , the measurement sensitivity increases with increases in frequency. And the highest sensitivity is obtained 8.91%/ mT at a frequency of 100 kHz. Similar results were obtained in the variation of the number of iteration N multilayer [Ni80Fe20 (800 nm) / Cu (300 nm)] N . Senitifitas measurements at a frequency of 100 kHz and the highest number of iteration (N=5) obtained the highest sensitivity, which is 26.63%/mT. Furthermore, the sensitivity of the sensor showed a tendency to decrease with the increase in the thickness of the spacer Cu in multilayer [Ni 80 Fe 20 (800 nm)/Cu (y nm)] 3 . Finally, the highest sensitivity was obtained 53.75% / mT for most thin thickness of the spacer Cu (y = 200 nm) which is the highest value in the whole of this experiment
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.