摘要
在以甘氨酸为络合剂的水溶液中,利用恒电位技术成功制备出了高Sm含量(质量分数为62.2%)的Sm-Co合金薄膜。循环伏安曲线表明,甘氨酸在电化学沉积Sm-Co合金薄膜的过程中具有重要作用。络合物[CoⅡ-SmⅢ(Gly-)2(HGly±)]3+的形成有利于Sm和Co在相对低电位下的共沉积。X射线衍射仪(XRD)分析结果表明,镀态合金膜为非晶态,经过退火处理后,合金膜由非晶态转化为多晶态结构,出现了永磁相Sm2Co17,合金膜的矫顽力明显增大。
Sm-Co films with high Sin content (62. 2 wt%) were electrodeposited from the aqueous solution con- taining glycine as a complexing agent by potentiostat technology. The measurements of cyclic voltammetry showed that the glycine plays a vital role in the electrodeposition of Sm-Co films. The forming of stable complex [CoⅡ-SmⅢ- (Gly-)2 (HGly± )]3+ facilitates the codeposition of Sin with Co at relatively low potential. The X-ray diffraction showed that the as-deposited Sm-Co films were amorphous. After annealing process, the films transformed into crys- talline state and the permanent Sin2 Co17 phase was formed, which enhanceed the coercivity of the films significantly.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2013年第16期24-26,38,共4页
Materials Reports
基金
国家自然科学基金(60571043)
国家教育部博士点基金(20120162110020)
关键词
Sm-Co合金膜
电沉积
电化学行为
水溶液
磁学性质
Sm-Co film, electrodeposition, electrochemical behavior, aqueous solution, magnetic properties