Figure 1
From: Structure and spectral properties of Dy3+ doped CaYAlO4 single crystal

(a) The crystal structure model and (b) three nonequivalent configurations of the CYA unit cell (denoted as “I”, “II” and “III”).
From: Structure and spectral properties of Dy3+ doped CaYAlO4 single crystal

(a) The crystal structure model and (b) three nonequivalent configurations of the CYA unit cell (denoted as “I”, “II” and “III”).