کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7870797 | 1509190 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and magnetic properties of Co nanorod superlattices
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and magnetic properties of Co nanorod superlattices Synthesis and magnetic properties of Co nanorod superlattices](/preview/png/7870797.png)
چکیده انگلیسی
We present the synthesis and magnetic properties of Co nanorods spontaneously organized in superlattices over a surface of several microns. This material results from the decomposition of a cobalt coordination precursor under hydrogen, in the presence of a long-chain amine and a long-chain acid. This synthetic procedure permits a remarkable control over the size distribution of the nanorods (diameter of 5Â nm and controllable mean length from 40Â nm to 100Â nm). The nanorods are monocrystals, and they are organized side by side along their long axis, in a direction perpendicular to the substrate exposing a surface of tips. Such layers are superposed forming 3D superstructures. These nanorod superlattices are ferromagnetic at r.t. and they are characterized by a strong coercive field as a consequence of their large magnetic anisotropy (magnetocrystalline and shape). Upon application of an external magnetic field the organization is improved even further, and this improvement is partially retained even after field removal. Therefore, this system can be considered as a good candidate for high density magnetic recording.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 27, Issues 5â8, September 2007, Pages 1162-1166
Journal: Materials Science and Engineering: C - Volume 27, Issues 5â8, September 2007, Pages 1162-1166
نویسندگان
F. Wetz, K. Soulantica, M. Respaud, A. Falqui, B. Chaudret,