Temperature dependence of initial permeability for Ni5(Fe0.5Co0.5)68.5Nb3Si17.5B5Cu1 alloy during successive heating-cooling cycles (only the heating curves are displayed, the temperatures indicated for each curve, Ta , are the top temperature of previous heating-cooling cycle).
XRD patterns of as-quenched and annealed Ni5(Fe0.5Co0.5)68.5Nb3Si17.5B5Cu1 samples.
Bright-field TEM image (a) and selected area electron diffraction pattern (b) of 640 °C-annealed Ni5(Fe0.5Co0.5)68.5Si17.5Nb3B5Cu1 alloy.
Values of the onset primary and secondary crystallization temperatures (T x1 and T x2), crystallized interval temperature (△ TX = TX 2 − △ TX 1), Curie temperature ( ), crystalline volume fraction (Vcry ), average grain size (D), and the maximum operation temperature (Tmax ) for Ni5Fe68.5Si13.5Nb3B9Cu1 (Ref. 7 ) and Ni5 (Fe0.5Co0.5)68.5Si17.5Nb3B5Cu1 alloys annealed at different temperatures.
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