TY - JOUR
T1 - Swift heavy ion irradiation of GaSb
T2 - From ion tracks to nanoporous networks
AU - Notthoff, C.
AU - Jordan, S.
AU - Hadley, A.
AU - Mota-Santiago, P.
AU - Elliman, R. G.
AU - Lei, W.
AU - Kirby, N.
AU - Kluth, P.
N1 - Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/4
Y1 - 2020/4
N2 - Ion track formation, amorphization, and the formation of porosity in crystalline GaSb induced by 185 MeV Au197 swift heavy ion irradiation is investigated as a function of fluence and irradiation angle relative to the surface normal. Rutherford backscattering spectrometry in channeling configuration and small-angle x-ray scattering reveal an ion track radius between 3 and 5 nm. The observed pore morphology and saturation swelling of GaSb films shows a strong irradiation angle dependence. Raman spectroscopy and scanning electron microscopy show that the ion tracks act as a source of strain in the material, leading to macroscopic plastic flow at high fluences and off-normal irradiation. The results are consistent with the ion hammering model for glasses. Furthermore, wide-angle x-ray scattering reveals the formation of nanocrystallites inside otherwise amorphous GaSb after the onset of porosity.
AB - Ion track formation, amorphization, and the formation of porosity in crystalline GaSb induced by 185 MeV Au197 swift heavy ion irradiation is investigated as a function of fluence and irradiation angle relative to the surface normal. Rutherford backscattering spectrometry in channeling configuration and small-angle x-ray scattering reveal an ion track radius between 3 and 5 nm. The observed pore morphology and saturation swelling of GaSb films shows a strong irradiation angle dependence. Raman spectroscopy and scanning electron microscopy show that the ion tracks act as a source of strain in the material, leading to macroscopic plastic flow at high fluences and off-normal irradiation. The results are consistent with the ion hammering model for glasses. Furthermore, wide-angle x-ray scattering reveals the formation of nanocrystallites inside otherwise amorphous GaSb after the onset of porosity.
UR - http://www.scopus.com/inward/record.url?scp=85084676456&partnerID=8YFLogxK
U2 - 10.1103/PhysRevMaterials.4.046001
DO - 10.1103/PhysRevMaterials.4.046001
M3 - Article
SN - 2475-9953
VL - 4
JO - Physical Review Materials
JF - Physical Review Materials
IS - 4
M1 - 046001
ER -