本實驗使用直流磁控濺鍍系統在玻璃基板上製作重複 (CoPt/Ag/C) 多次之多層膜樣品，提供磁性之CoPt膜總厚度固定為300Å，改變Ag膜與C膜厚度總厚度，觀察樣品經過熱處理，樣品的晶格結構、序化程度及磁性質的影響。
首先製作重複3次之多層膜樣品，我們發現無添加Ag層的樣品在經過600℃不同的熱退火時間， XRD圖只顯示出CoPt(111)的繞射峰，但添加Ag層的樣品顯示出代表序化結構的(001)繞射峰。
其次製作重複6次的多層膜樣品，我們將Ag膜總厚度分別固定為20 及30 Å，前者經過600℃退火處理，XRD圖除了主要的(111)峰值還有微弱的(001)峰值，隨著退火溫度提升至700℃，(001)峰值則清楚可見不過依然比(111)峰值強度小非常多；後者在600℃時已有明顯(001)峰值，而且強度比(111)峰值大。磁性方面前者與後者之頑磁場皆隨退火溫度與C膜厚度的提升而變大，不過卻也出現軟磁性的雜相，而磁滯曲線上出現雙肩現象。
最後製作重複9次之多層模樣品，並將Ag膜總厚度固定為30 Å，樣品經600℃退火即可序化，並且頑磁場隨C膜厚度增加而遞減。
顆粒間之交互作用，當樣品經600℃退火處理主要為靜磁交互作用力。但經700℃退火處理，交換偶合為主要之作用力。

We deposited the triple element nanocomposite films of (CoPt/Ag/C)n multilayer as well as CoPt/Ag/C trilayer on the fused-silica substrates by DC magnetron sputtering system keeping the thickness of CoPt at 300Å, in order to investigate the effects of Ag and C layer thickness on the crystal structure、order degree and magnetic properties after annealing, and n is the repetition number.
In the first place, we fabricated the samples of n=3, after annealing only revealed (111) peak in the XRD patterns for the samples not added Ag layers; but ones added Ag layers revealed the (001) peak that means fct order structure.
Secondly, we fabricated the samples of n=6 and varied the Ag thickness 20 and 30 Å, the former annealing at 600 and 700°C have strong (111) peak and weak (001) peak；the later annealing at 600℃ already has obvious (001) peak. Both coercivities increased with the annealing temperature and the thickness of C layer increasing. However, the shoulder leaded by soft magnetic phase was observed at low field in M-H curve.
Finally, we fabricated the samples of n=9 and kept the thickness of Ag at 30Å, after annealing at 600°C. They can become fct structure. The coercivities increased with the thickness of C layer decreasing.
The interaction between the grains originated in the magnetostatic interaction for the samples annealing at 600°C, but mainly in the exchange interaction for the ones annealing at 700°C.

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