کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1688055 | 1010715 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
X-ray magnetic circular dichroism study of iron/iron oxide granular nanostructures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present a study of the local magnetic properties of an iron/iron oxide nanostructured granular system by X-ray magnetic circular dichroism. The samples investigated consist of metallic iron (α-Fe) nanoparticles embedded in a nanocrystalline oxide matrix composed by both magnetite (Fe3O4) and maghemite (γ-Fe2O3). Samples were obtained by the inert gas condensation technique.Thanks to the chemical and site selectivity of XMCD, we were able to distinguish the magnetic contributions of the metallic core and of the two oxide phases present in the matrix and independently study their behaviour as a function of iron particle size, applied magnetic field, sample temperature and magnetization history.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 246, Issue 1, May 2006, Pages 20–24
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 246, Issue 1, May 2006, Pages 20–24
نویسندگان
Luca Signorini, Luca Pasquini, Federico Boscherini, Ennio Bonetti, Isabelle Letard, Sandrine Brice-Profeta, Philippe Sainctavit,