Nearly Monodispersion CoSm Alloy Nanoparticles Formed by an In-situ Rapid Cooling and Passivating Microfluidic Process
| العنوان: | Nearly Monodispersion CoSm Alloy Nanoparticles Formed by an In-situ Rapid Cooling and Passivating Microfluidic Process |
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| المؤلفون: | Laurence L. Henry, Yujun Song |
| المصدر: | Nanoscale Research Letters, Vol 4, Iss 10, Pp 1130-1134 (2009) Nanoscale Research Letters |
| بيانات النشر: | Springer Science and Business Media LLC, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Materials science, Nucleation, Nanochemistry, Nanoparticle, chemistry.chemical_element, Nanotechnology, Synthesis, Materials Science(all), lcsh:TA401-492, General Materials Science, Monodispersion, Quenching, Samarium, Nano Express, Microfluidic reactor, technology, industry, and agriculture, Cobalt, Coercivity, Condensed Matter Physics, Amorphous solid, Chemical engineering, chemistry, Alloy, Nanoparticles, lcsh:Materials of engineering and construction. Mechanics of materials |
| الوصف: | An in siturapid cooling and passivating microfluidic process has been developed for the synthesis of nearly monodispersed cobalt samarium nanoparticles (NPs) with tunable crystal structures and surface properties. This process involves promoting the nucleation and growth of NPs at an elevated temperature and rapidly quenching the NP colloids in a solution containing a passivating reagent at a reduced temperature. We have shown that Cobalt samarium NPs having amorphous crystal structures and a thin passivating layer can be synthesized with uniform nonspherical shapes and size of about 4.8 nm. The amorphous CoSm NPs in our study have blocking temperature near 40 K and average coercivity of 225 Oe at 10 K. The NPs also exhibit high anisotropic magnetic properties with a wasp-waist hysteresis loop and a bias shift of coercivity due to the shape anisotropy and the exchange coupling between the core and the thin oxidized surface layer. |
| تدمد: | 1556-276X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95a7ee9add9102a82a291dbbcb890ab6 https://doi.org/10.1007/s11671-009-9369-8 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....95a7ee9add9102a82a291dbbcb890ab6 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1556276X |
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