کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8036855 1518068 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic and structural properties of Ni nanocaps deposited onto self assembled nanosphere array
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Magnetic and structural properties of Ni nanocaps deposited onto self assembled nanosphere array
چکیده انگلیسی
Magnetic, structural and morphological results are presented on Ni (40 nm) thin film deposited on self assembled polystyrene (PS) nanosphere arrays by molecular beam epitaxy and the observed properties are compared with the results obtained on the similar film simultaneously deposited on Si and GaAs substrates prepared under the same environment. These nanospheres produce good uniformity over a large area as clearly seen in a scanning electron microscopy image. The Ni film grown on these nanospheres is polycrystalline in nature with grain size of ~ 7.5 nm. Corresponding magnetic force microscopy measurements confirm the influence of substrate material on magnetic domains in the samples. A comparatively higher coercivity of ~ 23 mT is observed by magneto optical Kerr effect measurement performed on Ni (40 nm)/PS, while the coercivities of Ni/Si and Ni/GaAs reference films are only ~ 13 mT and ~ 15 mT respectively. The observed results are interpreted in terms of influence of substrate and growth morphology on the magnetic properties of Ni films.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 536, 1 June 2013, Pages 249-255
نویسندگان
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