Co nanoparticle monolayer prepared by multiple diffusive incorporations onto a pre-existing nanoparticle template
- Authors
- Kim, Jung Hoon; Kim, Jeon; Kim, Chang Kyung; Yoon, Chong Seung
- Issue Date
- Feb-2007
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- nanoparticle; polyimide; template; Co-Ni alloy
- Citation
- COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v.293, no.1-3, pp.101 - 104
- Indexed
- SCIE
SCOPUS
- Journal Title
- COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
- Volume
- 293
- Number
- 1-3
- Start Page
- 101
- End Page
- 104
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180501
- DOI
- 10.1016/j.colsurfa.2006.07.014
- ISSN
- 0927-7757
- Abstract
- A monolayer of Co nanoparticles was fabricated on a polyimide (PI) film by successively depositing a 3.5-nm-thick Co thin film on top of a pre-existing nano-sized Ni particle template. Each Co deposition was followed by thermal annealing to induce coalescence of the Co film onto the pre-existing Ni seed particles. The Co deposition/thermal annealing step was repeated up to three times to grow 7-10-nm-sized Co nanoparticles on a polyimide film. We demonstrate that the average particle size can be controlled by the number of Co depositions. Thus-produced Co nanoparticles exhibited saturation magnetization comparable to its bulk value with coercivity reaching up to 120 Oe. Such a nanoparticle template process presented here can be easily extended to a ternary alloy particle and multi-functional nanoparticle system for potential applications in nanomagnet arrays, nanophotonic arrays or nanocatalyst arrays.
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