Homogeneous nucleation near a second phase transition and Ostwald's step rule

Details Homogeneous nucleation near a second phase transition and Ostwald's step rule Homogeneous nucleation near a second phase transition and Ostwald's step rule

2001-11-20

arxiv.org/abs/cond-mat/0111362v1

J. Chemical Physics 116, 5066-5072 (2002)

Physics

Condensed Matter

Statistical Mechanics

11 pages, 5 figures

Scientific paper

10.1063/1.1452108

Homogeneous nucleation of the new phase of one transition near a second phase transition is considered. The system has two phase transitions, we study the nucleation of the new phase of one of these transitions under conditions such that we are near or at the second phase transition. The second transition is an Ising-like transition and lies within the coexistence region of the first transition. It effects the formation of the new phase in two ways. The first is by reducing the nucleation barrier to direct nucleation. The second is by the system undergoing the second transition and transforming to a state in which the barrier to nucleation is greatly reduced. The second way occurs when the barrier to undergoing the second phase transition is less than that of the first phase transition, and is in accordance with Ostwald's rule.

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