From multiply twinned to fcc nanoparticles via irradiation-induced transient amorphization T. T. Järvi, D. Pohl, K. Albe, B. Rellinghaus, L. Schultz, J. Fassbender, A. Kuronen and K. Nordlund EPL, 85 2 (2009) 26001 Published online: 22 January 2009 DOI: 10.1209/0295-5075/85/26001