Giant magneto-impedance effect in As-deposited multilayered amorphous films

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Department of Physics, Shandong University, Ji'nan 250100, China [1 ]
不详 [2 ]
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Chin. Phys. Lett. | / 6卷 / 452-454期
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Amorphous films - Amorphous silicon - Iron compounds - Niobium compounds;
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摘要：
Giant magneto-impedance effects have been observed in as-deposited amorphous FeCuNbSiB/Cu/FeCuNbSiB and FeCuNbSiB/SiO2/Ag/SiO2/FeCuNbSiB multilayered films. The films were deposited onto Si substrates by radio frequency sputtering. In FeCuNbSiB/Cu/FeCuNbSiB films, maximum giant magneto-impedance ratios as large as 32% and 11% were obtained at 13MHz in the longitudinal and transverse fields, respectively. In FeCuNbSiB/SiO2/Ag/SiO2/ FeCuNbSiB films, the maximum giant magneto-impedance ratios were 47% and 57% at the same frequency for the two cases, which are much larger than those obtained in the annealed single layer films.
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