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Giant Magnetoresistence in FeNi-Ag granular alloys

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Some FeNi‐Ag granular films of composition Fe11.43Ni6.35Ag82.22 (sample A) and Fe7.62Ni16.4Ag75.98 (B) were prepared by using rf magnetron sputtering, and once deposited were rapidly annealed at 600, 650, and 750 °C. All samples displayed giant magnetoresistance. The zero‐field‐cooled and field‐cooled processes evidence the segregation of ferromagnetic particles with a broad size distribution. The temperature and magnetic field dependence of the resistance is analyzed. The magnetoresistance follows a Hn law at high fields and it decays from its maximum value with a Tm behavior, with m approaching 1 at high fields.

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BADIA, Ferran, et al. Giant Magnetoresistence in FeNi-Ag granular alloys. Journal of Applied Physics. 1994. Vol. 76, num. 10, pags. 6481-6483. ISSN 0021-8979. [consulted: 22 of May of 2026]. Available at: https://hdl.handle.net/2445/22108

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