Fe/sub 3/O/sub 4+/spl delta// films for GHz conducted noise suppressors deposited by high speed (> 100 nm/min) spin spray ferrite plating

Environmentally friendly Fe/sub 3/O/sub 4+/spl delta// films are fabricated by high speed (> 100 nm/min) ferrite plating onto polyimide sheets. The films are subjected to scanning electron microscopy observation and complex permeability measurements, and are found to exhibit strong magnetic losses at high frequencies. These will be applicable to GHz conducted noise suppressors.