Ruiz-Fuertes, J.; Gomis, O.; SEGURA, A.; Bettinelli, M.; Burianek, M.; Muehlberg, M.(American Institute of Physics, 2018-01)
[EN] In this letter, we have investigated the electronic structure of A(x)Ba(1-x)Nb(2)O(6) relaxor ferroelectrics on the basis of optical absorption spectroscopy in unpoled single crystals with A = Sr and Ca under high ...