本論文主要研究錳白金底層對於鐵白金合金性質之影響。在第一個部分我們發現錳白金底層能夠促進鐵金之低溫相變化。我們將錳白金底層與鐵白金一同鍍製在二氧化矽的基板上，我們發現厚度為10奈米的鐵白金長在50奈米的錳白金底層上在325 C 退火處理後，水平的矯頑磁場為7688 Oe。另外，我們也觀察到 554 Oe 的交換場，這表示錳白金除了能夠促進鐵白金的低溫相變之外，還提供了額外的異向性能來增加鐵白金的矯頑磁場。

之後，我們利用氧化鎂(001)的基板來成長具有垂直異向性的鐵白金薄膜。我們發現，利用錳白金底層能夠消除單純鐵白金長在氧化鎂基板上所出現的長條狀的磁域，並形成特殊的方塊型磁域。當成長在錳白金底層的鐵白金的厚度由12.5奈米逐漸增厚之後，其磁性翻轉的機制由原本的回轉模式為主轉變成由磁域壁移動所主導的翻轉機制。然而在沒有錳白金底層的樣品，我們發現其翻轉機制都是由磁域壁移動所主導。所有鐵白金的矯頑磁場都因為加了錳白金的底層而上升，這是因為錳白金的底層改變了鐵白金的成長機制進而改變其表面形貌，另外錳白金也提供了一個額外的異向性能，因此改變了鐵白金的矯頑磁場。

最後我們研究錳白金以及鐵白金這個雙層結構縱向的異向性能的分佈，我們發現由於錳的擴散以及反鐵磁性的錳白金提供額外異向性的緣故，此一雙層結構呈現中間軟而上下硬的異向性分佈。此為一漸進式媒體所需要的結構。

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