Unique nanostructure created in thin ceramics irradiated with swift heavy ions

Ishikawa, Norito   ; Taguchi, Tomitsugu*; Ogawa, Hiroaki  

When swift heavy ions are irradiated to ceramics, ion track damage is often created. The core-shell structure of ion tracks has been reported for amorphous SiO irradiated with the swift heavy ions. In the present study, we succeeded in observing the core-shell structure of crystalline SiO. The formation mechanism of the core-shell structure is discussed.