DIELECTRIC-PROPERTIES OF PB(ZN-1 3,NB-2/3)O-3 CERAMICS MODIFIED BY BA(ZN-1/3,NB-2/3)O-3 AND BATIO3/

Dielectric properties of lead zinc niobate (PZN) ceramics modified by barium zinc niobate (BZN) and BaTiO3 (BT) were investigated. By adding the modifier of BT and BZN, the stabilization of perovskite phase of PZN increased, but its Curie temperature decreased linearly with the a mount of added modifier. Room temperature dielectric constant of PZN i ncreased by addition of stabilizers up to 12 and 15 mol% of BZN and BT , respectively. The maximum room temperature dielectric constant was o bserved to be 7800 at 12 mol% of BZN, and 9800 at 15 mol% of BT, respe ctively. (C) 1998 Chapman & Hall.