Variations of Magnetic Properties of NiCuZn Ferrites (($Ni_{0.19}$$Mn_{0.01}$$Cu_{0.2}$$Zn_{0.6}$O)$_{1.02}$($Fe_2$$O_3$)$_{0.98}$ with addition of $Li_2$O-W$O_3$

$Li_2$O-W$O_3$첨가에 따른 NiCuZn 페라이트 ($Ni_{0.19}$$Mn_{0.01}$$Cu_{0.2}$$Zn_{0.6}$O)$_{1.02}$($Fe_2$$O_3$)$_{0.98}$의 자기특성의 변화