Surface Nanofeatures Induced by High-Energy Heavy Ions Irradiation |
| A. García-Bórqueza, C. Camacho-Olguína, L. Herrera-Colína, G. Rueda-Moralesa and W. Kesternichb IFF-FZ Jülich, German
aESFM-IPN, 07738 México D.F., Mexico bIFF-FZ Jülich, Germany |
| Full Text PDF |
| Received: 2005 20 05; |
| During neutron, ions or electron irradiation of materials, the surface morphology can be microroughened in different forms. Using a tandem accelerator with high current capability, 3.66 MeV Ni and Al ions were implanted into Ni-22 at %Si alloy at 650 ºC and into α-Al2O3 at 1000 ºC, respectively. Scanning electron microscopy observation revealed surface nanofeatures induced by the irradiations. On the Ni-Si alloy, long parallel channels are formed having a periodicity near to 2 μm and a mean depth of 30 nm (atomic force microscopy measurements). On α-Al2O3 nanopyramides with around 50 nm basis length and similar height were detected on some grains forming periodic chains. We assume that preferential sputtering produced both induced surface features. |
| PACS numbers: 96.35.Gt, 34.50.Dy |