Structural stability and vibrational characteristics of CaB6 under high pressure
Liu Mingkun, Tian Can, Huang Xiaoli †, Li Fangfei, Huang Yanping, Liu Bingbing, Cui Tian
       

(a) Selected Raman spectra of CaB6 measured with pressure uploading, and (b) Raman shift with pressure for main vibrational of CaB6; the open symbols represent the results of the first run compression while filled symbols represent the second run compression. The lineally fitted data is marked by dotted lines.