The X-ray diffraction patterns of BiFeO3, Bi0.9Sm0.1FeO3 and Bi0.85Sm0.1Ho0.05FeO3 at ambient temperature are shown in Fig \ref{663902}. BiFeO3 reveal the formation of Rhombohedral R3c structure with minor secondary phases such as Bi2Fe4O9 and Bi25FeO40 [\cite{Catalan_2009}]. The three samples shows distant separation of (1 0 4) and (1 1 0) planes with variation in intensities and hence are remained in same R3c phase (JCPDS# 01-086-1518) based on the crystal structure of BiFeO3