交流电化学沉积FeCo合金纳米线阵列及其磁性能研究

采用二步阳极氧化法制备孔结构高度有序的多孔氧化铝(AAO)模板。在不同Fe2+/Co2+摩尔比的电解液中,利用交流电化学沉积,在模板孔内成功制备了FeCo合金纳米线阵列。分别采用透射电子显微镜(TEM),场发射扫描电子显微镜(FE-SEM),X射线衍射仪(XRD)和震动样品磁强计(VSM)对样品的形貌,结构及磁学性能进行了表征。结果表明,制备的FeCo合金纳米线排列有序,粗细均匀;其直径与模板孔径一致,填充率较高,且具有明显的[110]择优取向。VSM测试结果表明,不同溶液浓度下制备的FeCo合金纳米线阵列均具有良好的垂直磁各向异性,易磁化轴沿着纳米线轴线方向。随着电解液Fe2+/Co2+摩尔...

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Published in材料工程 no. 3; pp. 79 - 82
Main Author 王学华 陈归 蔡鹏 付萍 李承勇 杨亮 曹宏
Format Journal Article
LanguageChinese
Published 武汉工程大学材料科学与工程学院,武汉,430073%武汉工程大学材料科学与工程学院,武汉430073 2012
华中科技大学武汉光电国家实验室,武汉430074%南京大学化学化工学院,南京,210093
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ISSN1001-4381
1001-4381
DOI10.3969/j.issn.1001-4381.2012.03.017

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Summary:采用二步阳极氧化法制备孔结构高度有序的多孔氧化铝(AAO)模板。在不同Fe2+/Co2+摩尔比的电解液中,利用交流电化学沉积,在模板孔内成功制备了FeCo合金纳米线阵列。分别采用透射电子显微镜(TEM),场发射扫描电子显微镜(FE-SEM),X射线衍射仪(XRD)和震动样品磁强计(VSM)对样品的形貌,结构及磁学性能进行了表征。结果表明,制备的FeCo合金纳米线排列有序,粗细均匀;其直径与模板孔径一致,填充率较高,且具有明显的[110]择优取向。VSM测试结果表明,不同溶液浓度下制备的FeCo合金纳米线阵列均具有良好的垂直磁各向异性,易磁化轴沿着纳米线轴线方向。随着电解液Fe2+/Co2+摩尔比的不同,可在一定范围内对FeCo合金纳米线阵列的磁性进行调控,并对其原因进行了讨论。
Bibliography:11-1800/TB
WANG Xue-hua,CHEN Gui,CAI Peng,FU Ping, LI Cheng-yong,YANG Liang,CAO Hong(1 School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430073,China;2 Wuhan National Laboratory for Optoelectronics,Wuhan 430074,China;3 School of Chemistry & Chemical Engineering,Nanjing University,Nanjing 210093,China)
porous anodic aluminum oxide template; electrochemical deposition; FeCo alloy nanowire arrays; magnetic anisotropy
Anodic aluminum oxide(AAO) membranes with highly ordered pores were prepared by secondary anodic oxidation.By using alternating current(AC) electrochemical deposition,FeCo alloy nanowire arrays were fabricated in anodic aluminum oxide(AAO) membranes in different electrolytes with variable molar ratios of Fe2+/Co2+.The morphology,microstructure and magnetic properties of FeCo alloy nanowires were characterized by TEM,FE-SEM,XRD and VSM,respectively.The results indicate the FeCo nanowire arrays are uniform and regular,which corresponds to the diameter of the nanochannel of t
ISSN:1001-4381
1001-4381
DOI:10.3969/j.issn.1001-4381.2012.03.017