本研究在純鋁箔基板上製作三種不同孔徑之陽極氧化鋁模版，藉由化學方法移除孔洞底部與鋁箔基板間的氧化鋁阻障層，並以底部鋁箔為電極在孔洞中電沉積鈷及鈷鉑奈米線，藉以探討線徑對奈米線陣列的磁性質之影響。

本研究首先製得AAO1、AAO2及AAO3(孔徑依次為25nm、40nm以及70nm)三種孔徑之模版，並蝕薄甚至移除AAO1與AAO2模版底部之阻障層，接著於AAO1和AAO2中沉積鈷奈米線，並於AAO1、AAO2和AAO3中沉積鈷鉑奈米線，進一步藉由將電鍍液的pH值提高至6，在AAO2中沉積出鈷鉑原子比例近乎1:1的鈷鉑奈米線。

鈷奈米線與鈷鉑奈米線均未顯示奈米線線徑與磁性質間有任何關聯，經X光繞射分析，判斷奈米線中的磁性顆粒相當小，遠小於線徑，故無法表現出幾何型貌與磁性質間的關係。

經由AGM磁性量測、X光繞射分析與ESCA成分分析，判斷鈷鉑奈米線應為鉑線中散佈著極小的鈷鉑合金顆粒或鈷顆粒。

In this thesis, we fabricated Co and CoPt nanowire arrays of different diameters using AAO templates and electrodeposition. We wanted to investigate the relation between the magnetic properties and the diameter of nanowire arrays.

We have fabricated AAO templates with pore diameters of 25nm (AAO1), 40nm (AAO2) and 70nm (AAO3) on pure Al foils, and thinned the alumina barrier layers under the pores for AAO1 and AAO2 templates.

By electrodeposition, we have fabricated Co nanowires using AAO1 and AAO2 template. CoPt nanowires were also fabricated using AAO1, AAO2 and AAO3 template. By increasing pH value of electrolyte to 6, Co concentration does increase in CoPt nanowires using AAO2 template. CoPt nanowires have atomic ratio of Co and Pt close to 1.

Both Co and CoPt nanowires did not show any relations between the magnetic property and the pore diameter. Because both Co and CoPt nanowires contain very fine magnetic grains that much smaller then the diameters of nanowire.

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