Biswas, Krishanu and Das, Puspendu Kumar and Chattopadhyay, Kamanio (2006) Microstructural evolution in laser-ablation-deposited Fe–25 at.% Ge thin film. In: Journal of Materials Research, 21 (1). pp. 174-184.
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Films with Fe–25 at.% Ge composition are deposited by the process of laser ablation on single crystal NaCl and Cu substrates at room temperature. Both the vapor and liquid droplets generated in this process are quenched on the substrate. The microstructures of the embedded droplets show size as well as composition dependence. The hierarchy of phase evolution from amorphous to body-centered cubic (bcc) to DO3 has been observed as a function of size. Some of the medium-sized droplets also show direct formation of ordered DO19 phase from the starting liquid. The evolution of disordered bcc structure in some of the droplets indicates disorder trapping during liquid to solid transformation. The microstructural evolution is analyzed on the basis of heat transfer mechanisms and continuous growth model in the solidifying droplets.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Materials Research |
| Publisher: | Cambridge University Press |
| Additional Information: | Copyright of this article belongs to Cambridge University Press. |
| Keywords: | Pulsed laser deposition (PLD);Thin film;Transmission electron microscopy (TEM) |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 08 Aug 2011 06:29 |
| Last Modified: | 08 Aug 2011 06:29 |
| URI: | http://eprints.iisc.ac.in/id/eprint/39799 |
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