کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8033174 | 1517967 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of deposition rate and thermal annealing on morphology and microstructural evolution of Nickel-Bismuth thin film
ترجمه فارسی عنوان
تاثیر نرخ رسوب و برش حرارتی بر مورفولوژی و تکامل میکرو سازه نازک نیکل بیسموت
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
Bismuth/Nickel thin films were deposited on borosilicate glass substrates using an electron beam evaporator equipped with thickness monitor. Thin film of Bi (10Â nm) was deposited on top of pre-deposited Ni (10Â nm) film at 0.6 and 1.8Â Ã
/second deposition rates. The samples were then annealed at temperatures between 60 °C and 260 °C for 1 to 5 h under vacuum of ~ 1 Ã 10â 6 mbar. Scanning electron microscopy was used to investigate surface morphology. Scanning electron microscopy images depicted islands at all temperatures including the as-deposited sample. High resolution transmission electron microscopy reveals highly crystalline film and nanowires with energy dispersive x-ray spectroscopy showing that the film and nanowires were formed by Bi and Ni elements with oxygen as impurity. Rutherford backscattering spectrometry revealed intermixing of layers at the interface. Furthermore, spontaneous formation of NiBi3 and NiBi stoichiometry was observed attributed to reaction-diffusion mechanism during deposition. X-ray diffraction revealed structural transformation of the films from amorphous (as-deposited) to polycrystalline hexagonal β-NiBi crystal structure at 60 °C to 200 °C. X-ray diffraction pattern also revealed hexagonal crystal lattice with preferential growth orientation along the [1 0 1] plane with other supported planes [0 0 2], [1 0 2], [1 1 0] and [1 0 3]. The results pointed toward successful utilization of this approach to prepare templates for the synthesis of well controlled, vertically aligned and well distributed crystalline nanowires of Ni-Bi binary system more relevant to the industrial application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 645, 1 January 2018, Pages 312-319
Journal: Thin Solid Films - Volume 645, 1 January 2018, Pages 312-319
نویسندگان
Christopher Mtshali, Charles Thethwayo, Carlos Pineda-Vargas, Muzi Ndwandwe,