Statistical study of effective anisotropy field in ordered ferromagnetic nanowire arrays
| Autor: | Teodor Veres, R. W. Cochrane, François Normandin, Karen Chan, Liviu Clime, Shiyong Zhao, Arthur Yelon, Hélène Roberge |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Biomedical Engineering Nanowire Oxide Metal Nanoparticles Bioengineering Nanowire Arrays Condensed Matter::Materials Science Magnetization chemistry.chemical_compound Magnetics Electrodeposition X-Ray Diffraction Electrochemistry Nanotechnology General Materials Science Anisotropy Field Anisotropy Saturation (magnetic) Magnetic Nanostructures Models Statistical Condensed matter physics Anodizing Nanowires Phosphorus General Chemistry Hydrogen-Ion Concentration Condensed Matter Physics Electroplating Ferromagnetic Nanowires Ferromagnetism chemistry Microscopy Electron Scanning Nanoparticles Lognormal Distribution Crystallization Current density |
| Zdroj: | Journal of nanoscience and nanotechnology. 7(1) |
| ISSN: | 1533-4880 |
| Popis: | Soft ferromagnetic nanowire arrays were obtained by electrodeposition of Co–Fe–P alloy into the pores of high quality home-made anodized aluminum oxide (AAO) templates. Bath acidity and current density were the two parameters used in order to tailor the orientation of local anisotropy axes in individual nanowires. In order to quantify the influence of the induced anisotropies on the magnetization processes in individual nanowires, the in-plane magnetization loops of the arrays are modeled as log-normal distributions of Stoner-Wohlfarth transverse magnetization processes. Using the lognormal mean parameter as an approximation for the saturation applied field of the array, we compute the effective anisotropy of the nanowires, which is found to increase with the pH of the electrodeposition bath. |
| Databáze: | OpenAIRE |
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