Shandong Univ, State Key Crystal Mat, Jinan 250100, Peoples R China
; Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
; Inst High Energy, Beijing Synchrotron Radiat Lab, Beijing 100039, Peoples R China
The growth defects in Nd:YCa4O(BO3)(3) (Nd:YCOB) crystals were investigated by transmission synchrotron topography. It was found that growth striations were the primary defects in Nd:YCOB crystals. Grown-in dislocations, mosaic blocks and inclusions were also observed in the crystals. The effect of temperature field on the formation of growth defects in the crystals was discussed.