Preparation of MnxNi0.5-xZn0.5Fe2O4 Nanorods by the Co-precipitation Method  

针状纳米MnxNi0.5-xZn0．5Fe2O4的共沉淀法制备及表征

作　　者：李巧玲[1] 常传波[1] 张巍[1] 张豪[1] 

机构地区：[1]中北大学理学院化学系,太原030051

出　　处：《Chinese Journal of Chemical Physics》2010年第6期680-684,745,746,共7页化学物理学报（英文）

摘　　要：MnxNi0.5-xZn0.5Fe2O4 nanorods were successfully synthesized by the thermal treatment of rod-like precursors that were fabricated by the co-precipitation of Mn2＋, Ni2＋, and Fe2＋ in the lye. The phase, morphology, and particle diameter were examined by the X-ray diffraction and transmission electron microscopy. The magnetic properties of the samples were studied using a vibrating sample magnetometer. nanorods with a diameter of 35 nm and an The results indicated that pure Ni0.5-xZn0.5Fe2O4 aspect ratio of 15 were prepared. It was found that the diametei of the MnxNi0.5-xZn0.5Fe2O4（0≤x≤0.5） samples increased, the length and the aspect .ratio decreased, with an increase in x value. When x=0.5, the diameter and the aspect ratio of the sample reached up to 50 nm and 7-8, respectively. The coercivity of the samples first increased and then decreased with the increase in the x value. The coercivity of the samples again increased when the x value was higher than 0.4. When x=0.5, the coercivity of the MnxNi0.5-xZn0.5Fe2O4 sample reached the maximal value （134.3 Oe） at the calcination temperature of 600 ℃. The saturation magnetization of the samples first increased and then. decreased with the increase in the x value. When x=0.2, the saturation magnetizat：ion of the sample reached the maximal value （68.5 emu/g） at the calcination temperature of 800 ℃.

关 键 词：MnxNi0.5-xZn0．5Fe2O4 Nanorod CO-PRECIPITATION Magnetic property 

分 类 号：O[理学]