Resolved E-symmetry zone-centre phonons in LiTaO3 and LiNbO3 by Margueron, S, Bartasyte, A, Glazer, A, Simon, E, Hlinka, J, Gregora, I, Gleize, J

LiTaO3 crystals with near-zero birefringence by Glazer, A, Zhang, N, Bartasyte, A, Keeble, D, Huband, S, Thomas, P, Gregora, I, Borodavka, F, Margueron, S, Hlinka, J