کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6613212 | 459595 | 2014 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Neutron reflectivity of electrodeposited thin magnetic films
ترجمه فارسی عنوان
انعکاسی نوترون از فیلم های مغناطیسی نازک الکترودهایی
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کلمات کلیدی
بازتاب نوترون، فیلم های نازک مغناطیسی فلز مس، کبالت، چند لایه،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
We present a polarised neutron reflectivity (PNR) study of magnetic/non-magnetic (CoNiCu/Cu) thin films grown by single bath electrodeposition. We find that the composition is neither homogeneous with time, nor consistent with bulk values. Instead an initial, non-magnetic copper rich layer is formed, around 2Â nm thick. This layer is formed by the deposition of the dilute, but rapidly diffusing, Cu2+ ions near the electrode surface at the start of growth, before the region is depleted and the deposition becomes mass transport limited. After the region has been depleted, by growth etc., this layer does not form and thus may be prevented by growing a copper buffer layer immediately preceding the magnetic layer growth. As has been previously found, cobalt deposits anomalously compared to nickel, and even inhibits Ni deposition in thin films. The layer magnetisation and average neutron scattering length are fitted independently but both depend upon the alloy composition. Thus these parameters can be used to check for model self-consistency, increasing confidence in the derived composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 138, 20 August 2014, Pages 56-61
Journal: Electrochimica Acta - Volume 138, 20 August 2014, Pages 56-61
نویسندگان
Joshaniel F.K. Cooper, Kunal N. Vyas, Nina-J. Steinke, David M. Love, Christian J. Kinane, Crispin H.W. Barnes,