Nanocomposites of Bead zirconate titanate (Pb(Zr-x,Ti1-x)O-3, PZT) with sec
ondary-phase dispersoids of metallic platinum were fabricated. Fatigue (cra
ck-growth) behavior of the unpoled PZT/platinum nanocomposite that containe
d precracks produced by a Vickers diamond indenter under electrical cyclic
loading was investigated. The crack growth was monitored via optical micros
copy and was dependent on the number of cycles to which the sample was subj
ected. The growth of the indentation crack was significantly reduced in the
PZT/platinum nanocomposite.