Volume 115, Number 3, August 2016
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||09 September 2016|
Mechanism of phase transition, from vapor to solid: Transient liquid phase is between the two
1 National Laboratory of Solid State Microstructures and Department of Material Science and Engineering, Nanjing University - Nanjing 210093, China
2 Institute of Physics - Sachivalaya Marg, Bhubaneswar 751005, India
3 Department of Physics, Nanjing University - Nanjing 210093, China
Received: 25 February 2016
Accepted: 11 August 2016
The mechanism of phase transition, from vapor to solid, is studied by producing non-stoichiometric ZnO and CdS nanoclusters (NCs) by low-energy cluster beam deposition technique, and examining their morphological and compositional evolution over a long span of time. It is concluded that the transition of vapor to solid goes through a transient liquid phase: coagulation of a large number of atomic clusters first forms liquid NCs which then solidify. The nature of the material and the experimental conditions determine crystallinity and shape of the NCs during the solidification process.
PACS: 64.70.Hz – Solid-vapor transitions / 64.70.Nd – Structural transitions in nanoscale materials / 64.75.Jk – Phase separation and segregation in nanoscale systems
© EPLA, 2016
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