DIELECTRIC-PROPERTIES OF THE LA3-3Y( DOPED SR0.3)2LAYBA0.7NB2O6 CERAMIC SYSTEM/

A process for obtaining Sr0.3-3y/2LayBa0.7Nb2O6 (LSBN) ceramics at dif ferent concentrations of the La3+ cation and different sintering times is presented. The dielectric properties of the LSBN system where Sr2 ions are substituted by La3+ cations follow the pattern of a modifica tion by cationic substitution for a constant Sr/Ba ratio. This behavio r of the dielectric properties indicate that the La3+ cations occupy t he A(1) as well as the A(2) sites which favors the formation of the LS BN system up to y < 0.05. For higher values the dielectric properties of the ceramic start to deteriorate. Copyright (C) 1997 Published by E lsevier Science Ltd