کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7992805 1516149 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The role of surface to bulk ratio on the development of magnetic anisotropy in high Ga content Fe100-xGax thin films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
The role of surface to bulk ratio on the development of magnetic anisotropy in high Ga content Fe100-xGax thin films
چکیده انگلیسی
In this work we show the development of bulk in-plane magnetic anisotropy in high Ga-content (Ga = 28 at. %) Fe100-xGax thin films as the layer thickness increases. This result is in clear contrast with the generally reported decrease of this anisotropy with the film thickness. We propose the interrelation between the enhancement of the Ga-pair correlations and a collinear distortion of the bcc structure within the sample plane as the origin of the magnetic anisotropy. Our results have been obtained by employing a combination of long and local range structural probe techniques with bulk and surface magnetic characterization techniques. The key point shown in this work is that the in-plane structural anisotropy and hence, the magnetic anisotropy, are developed as the layer thickness increases. This fact strongly suggests that the surface to bulk free energy ratio plays a key role in the formation of ordered phases with a distorted bcc cell in Fe100-xGax films with x around 28 at. %. Our work also shows the arising of new phenomena in these high Ga content alloys due to the close correlation between structural and magnetic properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 745, 15 May 2018, Pages 413-420
نویسندگان
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