کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8156682 | 1524849 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of 100Â MeV Ag+7 ion irradiation on the bulk and surface magnetic properties of Co-Fe-Si thin 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: Effect of 100Â MeV Ag+7 ion irradiation on the bulk and surface magnetic properties of Co-Fe-Si thin films Effect of 100Â MeV Ag+7 ion irradiation on the bulk and surface magnetic properties of Co-Fe-Si thin films](/preview/png/8156682.png)
چکیده انگلیسی
Thin films of Co-Fe-Si were vacuum evaporated on pre-cleaned float glass substrates employing thermal evaporation. The films were subsequently irradiated with 100Â MeV Ag+7 ions at fluences of 1Ã1011, 1Ã1012 and 1Ã1013 ions/cm2. The pristine and irradiated samples were subjected to surface analysis using Atomic Force Microscopy (AFM), Vibrating Sample Magnetometry (VSM) and Magneto Optic Kerr Effect (MOKE) measurements. The as deposited film has a root mean square roughness (Rq) of 8.9Â nm and an average roughness of (Ra) 5.6Â nm. Irradiation of the as deposited films with 100Â MeV Ag7+ ions modifies the surface morphology. Irradiating with ions at fluences of 1Ã1011 ions/cm2 smoothens the mesoscopic hill-like structures, and then, at 1Ã1012 ions/cm2 new surface structures are created. When the fluence is further increased to 1Ã1013 ions/cm2 an increase in the surface roughness is observed. The MOKE loop of as prepared film indicated a squareness ratio of 0.62. As the film is irradiated with fluences of 1Ã1011 ions/cm2, 1Ã1012 ions/cm2 and 1Ã1013 ions/cm2 the squareness ratio changes to 0.76, 0.8 and 0.86 respectively. This enhancement in squareness ratio towards 1 is a typical feature when the exchange interaction starts to dominates the inherent anisotropies in the system. The variation in surface magnetisation is explained based on the variations in surface roughness with swift heavy ion (SHI) irradiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 372, December 2014, Pages 224-232
Journal: Journal of Magnetism and Magnetic Materials - Volume 372, December 2014, Pages 224-232
نویسندگان
T. Hysen, P. Geetha, Salim Al-Harthi, I.A. Al-Omari, R. Lisha, R.V. Ramanujan, D. Sakthikumar, D.K. Avasthi, M.R. Anantharaman,