Size dependence of melting of GaN nanowires with triangular cross sections

作者：Wang, Zhiguo^*; Zu, Xiaotao; Gao, Fei; Weber, William J

来源：Journal of Applied Physics, 2007, 101(4): 043511.

DOI：10.1063/1.2512140

Molecular dynamics simulations have been used to study the melting of GaN nanowires with triangular cross sections. The variation in potential energy as a function of the cross-sectional area of GaN nanowires, along with the atomic configuration, is used to monitor the phase transition. The thermal stability of GaN nanowires is strongly size dependent. The melting temperature of the GaN nanowires increases with increasing cross-sectional area to a saturation value. Melting of the nanowires is initiated at the surface edges formed by the triangular shape and then spreads across the nanowire surface. As temperature increases, the melting expands into the inner regions of the nanowires.

• 出版日期2007-2-15
• 单位电子科技大学