There is a growing need to reduce the size and cost of power converter, which was widely used in portable/wireless devices like mobile phones, palmtop terminals, organizers, and other versatile communication tools.[1,2] For this purpose, the use of high frequencies (e.g.>100MHz) combined with thin ultra-soft high magnetic moment (Bs) films is desirable. High moment soft magnetic films are also widely used in modem electromagnetic devices, such as a high-frequency field-amplifying component, read-rite heads for magnetic disk memories in computers, and magnetic shielding material in tuners.[3]
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