Spherical C/LiMn1-XMXPO4 (M=Mg, Zn) cathode materials were successfully prepared by spray pyrolysis. An olivine structure was obtained by heating at 973 K under argon/hydrogen (5%) atmosphere. Citric acid was used as the carbon source. Scanning electron microscopy (SEM) showed that the materials had spherical morphology. The electrochemical properties of the cathode were also estimated by the rechargeable capacity and cycle performance. The first discharge capacity of C/LiMn1-XZnXPO4 (X = 0.1) was approximately 60 mAh/g　at 0.1 C.

High permeability of ferromagnetic materials has been used for noise reduction of the electronic devices. As an effect of noise attenuation of ferromagnetic materials is as a function of thickness, such materials are not suitable for recent trend of thinner package. We proposed to use electromagnetic induction instead of high permeability for noise attenuation that can be suitable for thinner package. We confirmed more than 90% noise attenuation ranging from 0.1 to 6 GHz and 3 to 30 GHz bands by 50μm total thickness of the noise attenuation sheets. Keywords-noise attenuation; electromagnetic induction; 50μm thick sheetI.