Abstract
Arrays of cobalt nanorods consisting of a number of nanowires have been fabricated by the electrochemical method using an anodic-aluminum oxide (AAO)/mesoporous-silica (SBA-15) composite. Microscopic studies clearly display that each nanorod (with a diameter of ∼200 nm) of the array was consisting of a number of cobalt nanowires which exhibit an average diameter of 3 nm. The observed hysteresis loops measured at room temperature indicate that the magnetic shape anisotropy of cobalt mesostructures, i.e. the parallel and perpendicular squarenesses of 0.5 and 0.1, respectively have been estimated. The maximum value of the coercivity measured perpendicular to the sample axis shows a value of 330 Oe and it was found that the coercivity decreases by increasing the temperature which is possibly caused by thermal disturbance inside the arrays.
Original language | English |
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Pages (from-to) | 1151-1155 |
Number of pages | 5 |
Journal | Solid State Communications |
Volume | 151 |
Issue number | 17 |
DOIs | |
State | Published - Sep 2011 |
Bibliographical note
Funding Information:Financial support from the National Natural Science Foundation of China ( 50701024 ) and Natural Science Foundation of Jiangsu Province of China (No: BK2010497 ) are gratefully acknowledged.
Keywords
- A. Mesoporous Co nanoarrays
- B. AAO/SBA-15 composite templates
- C. Electrodeposition
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry