Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO2 single crystals
Xu Nan-Nan1, Li Gong-Ping1, 2, †, , Lin Qiao-Lu1, Liu Huan1, Bao Liang-Man3
       

Micro-Raman spectra of the four SCs. Note that all curves shown here were normalized for comparison.