A novel as yet unreported magnetic composite,ferrocenyl magnet/BLT microceramics(ie.OPM/BLT) were prepared,the effective permeability(μe) and effective dielectric constant(εe) of composite were measured by theory and phase delay method,the result shows that the experimental results are in good agreement with that of the theory.However,the theory caculates was a simple and practical method for μe and εe obtanted,on the other hand the band-width was 8.6% and can be used to reduce geometric dimension of micros...