Abstract
Magnetic nanowires play an important role both in basic research, since they can exhibit new physical phenomena, and technological applications, such magnetic sotrage and magnetic sensors. It was investigated the magnetic properties of magnetic nanowires composed of multilayers made of Ni and Cu, fabricated by electrodeposition method in alumina porous template. We obtained their magnetization curves at 2 K and 300 K, and it was intended to perform magnetoresistance measurements. The latter was not done, because it was encountered difficulties in trapping the nanowires between electrodes.
Highlights
Magnetic nanowires are cylindric structures whose diameter is of the order of nanometers (10-9 m), length of the order of micrometers (10-6 m), and usually present at least one element among the ferromagnetic triplet Fe, Ni, Co, besides other possible transition metals.[1]
The objectives are to perform the magnetic characterization of the samples, through their hysteresis loop, to identify the process of magnetization reversal and to perform measurements of electrical transport, magnetoresistance measurements
The magnetic characterization was made by SQUID and VSM magnetometers at 2 K and 300 K, so it was obtained the hysteresis loops of each sample
Summary
Magnetic nanowires are cylindric structures whose diameter is of the order of nanometers (10-9 m), length of the order of micrometers (10-6 m), and usually present at least one element among the ferromagnetic triplet Fe, Ni, Co, besides other possible transition metals.[1]. The study objects were seven samples of magnetic nanowires made of several alternating layers of Ni and Cu. They were fabricated by the traditional method of electrodeposition in alumina porous membranes.[2] The objectives are to perform the magnetic characterization of the samples, through their hysteresis loop, to identify the process of magnetization reversal and to perform measurements of electrical transport, magnetoresistance measurements. The magnetic characterization was made by SQUID and VSM magnetometers at 2 K and 300 K, so it was obtained the hysteresis loops of each sample.
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