6533b872fe1ef96bd12d37ab
RESEARCH PRODUCT
Temperature dependence of magnetization reversal in Co and Fe3O4 nanowire arrays
Donats ErtsOlga KazakovaTimothy A. CrowleyJaideep S. KulkarniJustin D. Holmessubject
Materials scienceCondensed matter physicsMagnetometerNanowirechemistry.chemical_elementMesoporous silicaCondensed Matter PhysicsElectronic Optical and Magnetic Materialslaw.inventionchemistry.chemical_compoundTransition metalchemistrylawThin filmPorous mediumCobaltMagnetitedescription
Abstract In this paper, we investigate the magnetization reversal of cobalt and magnetite nanowires, 4 nm in diameter, synthesized within the pores of mesoporous silica thin films. A SQUID magnetometer was used to study the magnetic properties of the nanowire arrays over a broad temperature interval, T= 1.8–300 K. The magnetization reversal process was found to be strongly temperature dependent. While a coherent rotation may occur at room temperature, a process involving the formation of domain structures takes place as the temperature decreases down to 1.8 K.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-02-01 | Journal of Magnetism and Magnetic Materials |