Radiation-induced metastable ordered phase in gallium nitride

Ishimaru, Manabu
May 2010
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p191908
Academic Journal
Energetic particle irradiation is one of the useful ways for realizing metastable phases far from the equilibrium state. In the present study, we performed electron-beam-irradiation into gallium nitride (GaN) with a wurtzite structure and examined its structural changes using transmission electron microscopy. It was found that superlattice Bragg reflections appear in the electron diffraction patterns of the irradiated GaN. This suggests that the wurtzite GaN transforms to another crystalline structure with atomic ordering.


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