화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.140, No.2-3, 570-574, 2013
Enhanced saturation magnetization of Fe3Si nanodot-embedded Fe80Si17Nb3 flexible film for efficient wireless power transfer
An efficient magnetically coupled resonance response is performed using an iron silicide-based nanostructured magnetoelectric material with high saturation magnetization for the wireless charging of battery-powered consumer electronics. With 500 degrees C annealing, the self-assembled Fe3Si nanodots buried in the Fe80Si17Nb3 host matrix with (220) lattice spacing of 1.99 angstrom corresponding to a volume density of 8.96 x 10(16) cm(3), can be obtained and a maximum saturation magnetization of 244 emu g(-1) achieved. The return loss of the antenna will be tuned to match the designed frequency with greater attenuated intensity (-0.39 dB) and a relatively narrow bandwidth (6 kHz) when the Fe3Si nanodot-embedded Fe80Si17Nb3 sample is placed in a WiTricity system. An efficient wireless power transfer can be created and improved from 47.5% to 973%. The associated coil and loop antenna resonators are significantly readjusted to match the power transfer by putting this nanostructured magnetoelectric material in a WiTricity system. (C) 2013 Elsevier B.V. All rights reserved.