1. Size control of L1-FePt nanocrystals by spin-coating method.
- Author
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Bamshad, Zahra, Sebt, Seyed, and Abolhassani, Mohammad
- Subjects
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IRON compounds , *NANOCRYSTALS , *SPIN coating , *HEXANE , *ANNEALING of metals , *STANDARD deviations - Abstract
Annealing is one of the stages of FePt nanoparticles preparation, during which the transition to a compositionally ordered phase occurs. In order to size and shape control of the nanoparticles in the mentioned stage, it is needed that they be distributed on a suitable surface. In the present work, the spin-coating method is suggested for preparing monolayer from L1-FePt nanoparticles colloidal solution on SiO/Si substrates. FePt nanoparticles were gradually deposited as droplets on the center of a 500 rpm rotating substrate. This step was performed in hexane vapor atmosphere without any stopping time. The analyses revealed that a uniform surface distribution was formed so that, after annealing at 600 °C for 1 h the 6.1 nm L1-FePt nanoparticles were spherical in shape with standard deviation of 1.5 nm. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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