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Nano-porosity in GaSb induced by swift heavy ion irradiation

Authors :
Kluth, P
Sullivan, James
Li, W
Weed, R
Schnohr, C. S
Giulian, R
Araujo, L. L
Lei, W
Rodriguez, M. D
Afra, B
Bierschenk, T
Ewing, R. C
Ridgway, M. C
Kluth, P
Sullivan, James
Li, W
Weed, R
Schnohr, C. S
Giulian, R
Araujo, L. L
Lei, W
Rodriguez, M. D
Afra, B
Bierschenk, T
Ewing, R. C
Ridgway, M. C
Source :
Applied Physics Letters
Publication Year :
2014

Abstract

Nano-porous structures form in GaSb after ion irradiation with 185 MeV Au ions. The porous layer formation is governed by the dominant electronic energy loss at this energy regime. The porous layer morphology differs significantly from that previously reported for low-energy, ion-irradiated GaSb. Prior to the onset of porosity, positron annihilation lifetime spectroscopy indicates the formation of small vacancy clusters in single ion impacts, while transmission electron microscopy reveals fragmentation of the GaSb into nanocrystallites embedded in an amorphous matrix. Following this fragmentation process, macroscopic porosity forms, presumably within the amorphous phase.

Details

Database :
OAIster
Journal :
Applied Physics Letters
Publication Type :
Electronic Resource
Accession number :
edsoai.on1291747425
Document Type :
Electronic Resource