Ismangil, A., Noor, F. and Winata, T. (2021) “The Effect of Niobium and Rubidium Doping on the Energy Band Gap of a Lithium Tantalate (LiTaO3) Thin Film”, Indonesian Journal of Physics, 32(2), pp. 1-5. doi: 10.5614/itb.ijp.2021.32.2.1.