Fe_(0．3)Co_(0．7)纳米有序阵列的制备和磁性  

Fabrication and magnetic properties of Fe_(0.3)Co_(0.7)nanowires arrays

作　　者：覃东欢[1] 力虎林[2] 

机构地区：[1]华南理工大学材料学院光电所,广州510641 [2]兰州大学化工学院,兰州730000

出　　处：《材料研究学报》2007年第5期501-505,共5页Chinese Journal of Materials Research

基　　金：国家自然科学资金60471014资助项目.

摘　　要：使用小孔径阳极氧化铝模板制备Fe0．3Co0．7纳米线有序阵列，研究了热处理对其磁性的影响．结果表明，热处理对Fe0．3Co0．7纳米线有序阵列的结晶度和局部形状各向异性有重大的影响，导致纳米阵列的矫顽力和剩磁比发生相应的变化．在适当热处理条件下获得的Fe0．3Co0．7纳米线有序阵列具有较高的矫顽力和剩磁比．在H2保护下550℃处理时获得最高的矫顽力2．63×10^5A／m，矫顽力随着热处理时间的增加先是快速增加，然后趋向平缓，最后有一定程度的下降．Fe0.3Co0.7 alloy nanowires arrays were synthesized sucessfully by ac electrodeposition into the pore of porous anodic aluminum oxide（PAO） template with small pore. It was found that the coercivity and squareness of the sample increased dramatically after heat-treatment. Samples annealed at 550 ℃ with H2 protection have the highest coercivity of 2.63 × 10^5 A/m. The coercivity of the samples first increased with increasing annealing time then go to a platform, then drop down to a certain value. The change in the magnetic properties of the samples can be due to the change in crystalline and anisotropy in local field.

关 键 词：金属材料 Fe0.3Co0.7纳米线 电化学沉积 垂直磁各向异性 

分 类 号：O482[理学—固体物理]