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利用異質奈米結構製作奈米尺寸的磁性金屬薄膜

The preparation of magnetic nano-films using heterostructure template

摘要


在真空環境下,將鐵蒸鍍到部分氧化的單晶鎳鋁(001)表面,利用鐵原子在該基底表面的氧化鋁奈米結構與在鎳鋁金屬表面的成長模式差異,我們可以製備被奈米粒子分隔開來的奈米鐵薄膜。藉由鍍膜量的控制,我們可以讓奈米鐵粒子在室溫下處於順磁狀態,因而造成處於鐵磁狀態的奈米鐵薄膜。這些薄膜的尺寸可以從數十奈米到數微米。藉由控制鐵的鍍膜量和基底的奈米結構,我們就可以製備不同尺寸的磁性奈米金屬薄膜。

關鍵字

奈米薄膜 自組裝 異質結構

並列摘要


Nanosized ultrathin magnetic films were prepared by controlling the deposition of Fe onto an oxidized NiAl(001) surface with an alumina nanostructure on it. Because the ultrathin ferromagnetic Fe films on the bare NiAl(001) surface are separated by paramagnetic Fe nanoparticles on the alumina stripes, as determined by scanning electron microscopy with spin analysis, they form rectangular domains with sizes ranging from tens of nanometer to larger than a micrometer. Magnetic domain patterning can thus be achieved by controlling the Fe coverage and nanostructured template.

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