钼酸钠对电沉积Co-Pt-Mo磁性薄膜性能的影响  

Influence of Sodium Molybdate on Properties of Co-Pt-Mo Magnetic Films Prepared by Electrodeposition

作　　者：李晓芳[1] 谭菊华[2] 郭小春[1] LI Xiaofang;TAN Juhua;GUO Xiaochun(School of Electronics and Information,Nanchang Institute of Technology,Nanchang 330044,China;College of Science and Technology,Nanchang University,Nanchang 330029,China)

机构地区：[1]南昌理工学院电子与信息学院,江西南昌330044 [2]南昌大学科学技术学院,江西南昌330029

出　　处：《电镀与环保》2019年第6期33-35,共3页Electroplating & Pollution Control

基　　金：江西省教育厅科学技术研究项目(171453)

摘　　要：在纯铜表面制备了Co-Pt-Mo磁性薄膜,并研究了钼酸钠的质量浓度对Co-Pt-Mo磁性薄膜性能的影响。结果表明:随着钼酸钠的质量浓度的增加,Co-Pt-Mo磁性薄膜的厚度和电流效率显著提高,钴和钼的质量分数逐渐增大,使得比饱和磁化强度增大。然而,当钼酸钠的质量浓度为10 g/L时,由于剧烈的析氢和金属氢氧化物胶体的阻碍作用,使得电流效率下降,Co-Pt-Mo磁性薄膜表面的颗粒发生团聚现象,孔隙率增大,矫顽力降低。当钼酸钠的质量浓度为8 g/L时, Co-Pt-Mo磁性薄膜具有致密的结构和最大的矫顽力。Co-Pt-Mo magnetic films were prepared on pure copper, and the influence of the mass concentration of sodium molybdate on the properties of Co-Pt-Mo magnetic films was investigated. The results showed that with the increase of the mass concentration of sodium molybdate, the thickness and current efficiency of Co-Pt-Mo magnetic film were significantly increased, the mass fraction of cobalt and molybdenum was increased gradually resulting in the increase of specific saturation magnetization. However, when the mass concentration of sodium molybdate was 10 g/L, the current efficiency and magnetic properties were decreased due to the severe hydrogen evolution reaction and the blocking effect of metal hydroxide gel. Moreover, the particles on the surface of Co-Pt-Mo magnetic film agglomerate, the porosity was increased and the coercivity was decreased. When the mass concentration of sodium molybdate was 8 g/L, the Co-Pt-Mo magnetic film possessed dense structure and the maximum coercivity.

关 键 词：Co-Pt-Mo磁性薄膜 电沉积 矫顽力 

分 类 号：TQ153[化学工程—电化学工业]