Electrical magnetoresistivity of amorphous (Fe-Ni)80B20, (Fe-Ni)80P14B6, (Fe-W)80B14Si6, and (Fe-Cr)80B14Si6 alloys

Abstract
The electrical magnetoresistivity of amorphous Fe80–xNixB20 (x = 0, 10, 20, 30, 40, 50), Fe80–xNixP14B6 (x = 0, 10, 20, 30, 40, 50, 60, 70), Fe80–xWxB14Si6(x = 0, 2, 4, 6, 8), and Fe80–xCrxB14Si6 (x = 0, 2, 4, 6, 10, 14, 16, 20) alloys has been measured at both 77 and 300 K in applied magnetic fields up to 6 kG. The ferromagnetic anisotropy of electrical resistivity (FAR) decreases much faster with increasing concentration of Cr or W than Ni. Our experimental data suggest that FAR is closely related to the magnetic saturation moment (μ̄) per transition metal atom at 0 K, i.e., FAR = Aμ̄m, where A and m are temperature‐dependent parameters.

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