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This article is cited in 2 scientific papers (total in 2 papers)
Kinetics of nucleus growth from a nanophase
V. G. Dubrovskii St. Petersburg National Research University of Information Technologies, Mechanics and Optics
Abstract:
We present a theoretical analysis of the growth kinetics of a nucleus from a nano-sized mother phase with a restricted amount of material in the presence of the stopping effect due to the depletion of supersaturation. Such a regime is typical for GaAs nanowires grown by the vapor-liquid-solid mechanism from a Ga droplet and is observed by in situ growth monitoring inside a transmission electron microscope. An analytical solution is obtained for the time-dependent size of the nucleus and atomic concentration in a nano-phase. A principally new time-scale hierarchy is found, whereby the entire growth process id divided into 3 stages – (1) fast nucleus growth to the stopping size, (2) slow nucleus growth at the rate of refill of a mother phase, and (3) further refill of a mother phase to resume the initial supersaturation. A general criterion is formulated for observing the stopping effect depending on the size of a nano-phase.
Keywords:
nucleus, III–V nanowires, monocentric nucleation, growth kinetics.
Received: 14.01.2020 Revised: 14.01.2020 Accepted: 16.01.2020
Citation:
V. G. Dubrovskii, “Kinetics of nucleus growth from a nanophase”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 46:8 (2020), 3–6; Tech. Phys. Lett., 46:4 (2020), 357–360
Linking options:
https://www.mathnet.ru/eng/pjtf5123 https://www.mathnet.ru/eng/pjtf/v46/i8/p3
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