کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1802883 1024606 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-dimensional assemblies of silica-coated cobalt nanoparticles: Magnetic pearl necklaces
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
One-dimensional assemblies of silica-coated cobalt nanoparticles: Magnetic pearl necklaces
چکیده انگلیسی

Silica-coated cobalt nanoparticles were found to organize into chains when driven by a weak external magnetic field. Strong dipole–dipole magnetic interactions are believed to be the driving force of the self-organization once the cobalt nanoparticles undergo the superparamagnetic to ferromagnetic (SP–FM) transition, as increasing their size during the synthesis process. The method, although simple, produces structures resembling pearl necklace-like structures, comparable to one-dimensional species obtained in more laborious processes. Molecular dynamic simulations taking magnetic dipolar forces into account reproduce the observed self-assembled structures. The nanoscale engineering of this type of colloids is expected to extend the spectrum of magnetic effects and functionalities.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 303, Issue 1, August 2006, Pages 163–166
نویسندگان
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