Fabrication and magnetic properties of highly ordered Co16Ag84 alloy nanowire array
Fabrication and magnetic properties of highly ordered Co16Ag84 alloy nanowire array
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DOI：
10.1007/s003390100914
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发表时间：
2002-04
期刊：
影响因子：
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通讯作者：
Y. Wang;Guonian Wang;Shixing Wang;T. Gao;H. Sang;L. Zhang
中科院分区：
文献类型：
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作者：
Y. Wang;Guonian Wang;Shixing Wang;T. Gao;H. Sang;L. Zhang
采用电沉积法在阳极氧化铝膜（AAMs）纳米通道中成功制备了高度有序的Co-Ag合金纳米线阵列。扫描电子显微镜和透射电子显微镜的观察表明，有序的Co-Ag合金纳米线被均匀地组装到AAM的六边形有序纳米通道中。磁性测量表明，有序纳米线阵列的垂直磁化率（Hc_e）随着退火温度（Ta）从300 °C升高而急剧增加，在400 ° C时达到最大值（183 Oe），然后随着Ta进一步升高而急剧下降。然而，在退火过程中的纳米线阵列的平行双折射率（Hc ε）的变化不大。这一现象的发生与AAM和纳米线的特殊结构有关。
Highly ordered Co-Ag alloy nanowire arrays embedded in the nanochannels of anodic alumina membranes (AAMs) were successfully fabricated using electrodeposition. Scanning electron microscopy and transmission electron microscopy observations revealed that the ordered Co-Ag alloy nanowires were uniformly assembled into the hexagonally ordered nanochannels of the AAMs. Magnetic measurements showed that the perpendicular coercivity (Hc⊥) of the ordered nanowire arrays increased dramatically as the annealing temperature (Ta) rose from 300 °C, reached its maximum (183 Oe) at 400 °C and then decreased sharply as Tafurther increased beyond 400 °C. However, there was little change in the parallel coercivity (Hc∥) of the nanowire arrays during the annealing process. The mechanism of this phenomenon was attributed to the special structure of the AAMs and nanowires.