(Na0.425+xLu0.575-x-yNdy)F2.15-2x (x=0, y=0, 0.001, 0.01, 0.05, 0.1, 0.2: x=+/- 0.01, 0.02, 0.05, y=0.05) single crystals were grown from the melt using the precise atmosphere control type Micro-Pulling-Down (mu-PD) method to examine their potential as a new VUV scintillators. The grown crystals were single-phase materials with fluorite type structure (Fm - 3m, Z=4) as confirmed by XRD and had good crystallinity. The distribution of the crystal constituents in axial and radial directions was evaluated, and only negligible non-uniformity along growth axis was detected. The crystals demonstrated 70-90% transmittance above 176-188 nm wavelength and Nd3+ 5d-4f luminescence (when exited by X-ray) observed around 185 nm. Both 5d-4f absorption and emission peaks shifted to longer wavelength region. The radioluminiscence measurements under 5.5 MeV alpha-ray excitation (Am-241) demonstrated the light yield of 35-90 [Ph/5.5 MeV-alpha] and the decay time of 5.5-7.5 ns. (C) 2010 Elsevier B.V. All rights reserved.