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One-step solution fabrication of magnetic chains consisting of jingle-bell-shaped cobalt mesospheres.
- Source :
- Applied Physics Letters; 9/4/2006, Vol. 89 Issue 10, p103105, 3p, 3 Black and White Photographs, 1 Graph
- Publication Year :
- 2006
-
Abstract
- Using a one-step solution phase approach, the authors have synthesized uniform jingle bell-shaped cobalt mesopheres (550–750 nm) and assembled the mesospheres into long magnetic chains (20–30 μm). All of the cobalt spheres are hollow with ∼40 nm thick shells but each contains an ∼200 nm diameter solid ball. The nano- to mesoscale structures were realized via reaction of CoCl<subscript>2</subscript>·6H<subscript>2</subscript>O and N<subscript>2</subscript>H<subscript>4</subscript>·H<subscript>2</subscript>O in the presence of polyvinylpyrrolidone (PVP) in an ethylene glycol solution. Magnetic measurements show a coercivity of about 75 Oe with a remnance of 9.6 emu/g at 300 K. We propose a possible mechanism for the formation of the nanoto mesoscale structures. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 89
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 23267609
- Full Text :
- https://doi.org/10.1063/1.2344933