Shape-controlled synthesis of FeNi3 nanoparticles by ambient chemical reduction and their magnetic properties
Shape-controlled synthesis of FeNi3 nanoparticles by ambient chemical reduction and their magnetic properties
复制标题
环境化学还原形状控制合成 FeNi3 纳米颗粒及其磁性能
DOI：
10.1557/jmr.2012.67
复制
发表时间：
2012-06-01
影响因子：
2.7
通讯作者：
Nie Zuoren
中科院分区：
文献类型：
--
作者：
Guo Hongxia;Cheng Hua;Nie Zuoren
提出了一种通过溶液还原反应来控制FeNi 3纳米颗粒形貌的简便方法。在超声辐照下，以0.16 mol/L肼为反应介质，改变pH值，Fe ~（2+）：Ni ~（2+）= 1：3，制备了球形至片状的FeNi 3纳米粒子。肼的用量对粒子的形貌影响不大。片状颗粒的饱和磁化强度（M-s）和矫顽力（H-c）分别为59 emu/g和120 Oe。血小板颗粒渗透率的真实的部分μ '约为2.43-2.71，并且在0.1-1.0 GHz范围内与频率无关。粒子的虚部（μ“）在相同频率范围内从0.04增加到2.14。
A facile method to control the morphology of FeNi3 nanoparticles by solution reduction reaction is presented. The spherical to platelet FeNi3 particles were obtained by changing pH from 11.5 to 12.5 with 0.16 mol/L of hydrazine under ultrasound irradiation, with the ratio of Fe2+ to Ni2+ as 1:3. The amount of hydrazine had little influence on the morphology of the particles. The saturation magnetization (M-s) and coercive force (H-c) of the platelet particles were 59 emu/g and 120 Oe, respectively. The real part mu' of the permeability of the platelet particles was about 2.43-2.71 and was frequency-independent in the range of 0.1-1.0 GHz. The imaginary part (mu '') of the particles showed increase from 0.04 to 2.14 within the same frequency range.