کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1801498 1024571 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Role of oxygen impurity in growth and magnetic properties of Ni83Fe17 permalloy thin films
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Role of oxygen impurity in growth and magnetic properties of Ni83Fe17 permalloy thin films
چکیده انگلیسی

To study the influence of oxygen impurities in the sputtering atmosphere on microstructure, and the magnetic and magnetotransport properties, thin films of Ni83Fe17 were deposited under dc magnetron sputtering technique into which regulated oxygen gas was introduced. The partial pressure of oxygen was varied from 2×10−7 to 3×10−6 mbar. X-ray diffraction patterns indicate the reduction of grain growth with increasing the oxygen partial pressure. The grain microstructure and the composition were confirmed through high resolution transmission electron microscopy attached with Scanning Transmission Electron Microscopy (STEM). Transition from canted to rectangular magnetic hysteresis loop was observed through magnetization measurements for samples prepared under higher oxygen partial pressure which implies the structural changes in the magnetic domain formation. These observations were further confirmed through the measurements of anisotropic magnetoresistance properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 322, Issue 21, November 2010, Pages 3266–3270
نویسندگان
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