High density magnetic recording on protein-derived nanoparticles
| العنوان: | High density magnetic recording on protein-derived nanoparticles |
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| المؤلفون: | Kim Wong, J.R. Hoinville, Barnaby Warne, Angus Bewick, Eric Mayes, J. Wiggins, Richard A. L. Jones, Artur M. Nartowski, David Gleeson, Oksana Kasyutich |
| المصدر: | Journal of Applied Physics. 93:7187-7189 |
| بيانات النشر: | AIP Publishing, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Spin coating, Materials science, Chemical engineering, Annealing (metallurgy), General Physics and Astronomy, Magnetic nanoparticles, Nanoparticle, Nanotechnology, Coercivity, Magnetic hysteresis, Dip-coating, Grain size |
| الوصف: | Self-organized Co/Pt nanoparticulate arrays offer a novel approach to fabricating magnetic recording media with the potential for supporting Terabit/in.2 recording densities. Protein-derived Co/Pt nanoparticles are prepared within apoferritin from aqueous reactants, with synthesis conditions controlling grain size, structure, and composition. Smooth films on glass disk substrates are produced by either spin coating or dip coating from aqueous dispersions of the precursor material. Films are typically annealed at 590 °C for 60 min with a 19 kPa (190 mBar) partial pressure of H2 to form the L10 phase. By varying the annealing conditions we are able to produce coercivities in the range of 500–8000 Oe. Electrical testing of Co/Pt nanoparticulate media using a contact test recorder shows that these nanoparticle films are capable of sustaining recording densities of more than 12.6 Gbits/in.2 (143.6 kfci, kilo flux changes per inch). In this article we will present results from finished films with regard to film... |
| تدمد: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.1555896 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1f9c4a6029615e39518883f0e54d53d3 https://doi.org/10.1063/1.1555896 |
| رقم الانضمام: | edsair.doi...........1f9c4a6029615e39518883f0e54d53d3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897550 00218979 |
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| DOI: | 10.1063/1.1555896 |