کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834106 | 1524906 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Morphology and magnetic properties of ECR ion beam sputtered Co/Pt films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Morphology and magnetic properties of ECR ion beam sputtered Co/Pt films Morphology and magnetic properties of ECR ion beam sputtered Co/Pt films](/preview/png/9834106.png)
چکیده انگلیسی
We report the fabrication of magnetic films using electron cyclotron resonance ion beam sputtering. The films consist of a Pt buffer layer, a thin magnetic Co layer and a Pt cap. Varying the thickness of the layers, we can tune the magnetic properties and a uniaxial perpendicular magnetic anisotropy can be obtained. Materials like amorphous silicon oxide, amorphous carbon, glass, mica and potassium bromide have been used as substrates. We have analyzed the structure of Co/Pt films on amorphous carbon by means of transmission electron microscopy. The analysis reveals that the buffer layers are polycrystalline with a (1Â 1Â 1)-texture, which increases with Pt thickness. The average grain-size is linearly correlated with the total thickness of the Pt buffer layer. While Co grows predominantly in its HCP stacking with c-axis aligned parallel to the surface normal, FCC grains with a strong (1Â 1Â 1) texture are also found. Scanning tunneling microscopy investigations reveal an average surface roughness of the Pt buffer layer of 3.0Ã
. For buffer thickness ⩾60Ã
we find similar magnetic properties for all Co films, not depending on the substrate materials. Co films of 4-8Â Ã
thickness exhibit a perpendicular easy axis of magnetization, while a spin reorientation transition is found in a thickness range of 8-13Â Ã
. Above 13Â Ã
an in-plane easy axis of magnetization is obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 292, April 2005, Pages 345-358
Journal: Journal of Magnetism and Magnetic Materials - Volume 292, April 2005, Pages 345-358
نویسندگان
Michael Wellhöfer, Michael WeiÃenborn, Rainer Anton, Sabine Pütter, Hans Peter Oepen,