XRD patterns and SEM image. (a) The measured XRD patterns of BaGdF5: 1%Ho3+, x%Yb3+ (0 ≤ x ≤ 20) as well as the standard XRD pattern of BaGdF5 (JCPDS no. 24–0098) used as a reference. (b) SEM image of BaGdF5: 1%Ho3+ nanoparticle as a representative.
Guo et al. Nanoscale Research Letters 2012 7:636 doi:10.1186/1556-276X-7-636