Abstract
The functional form of the time decay of the remanent polarization under high-electrical drives, known as fatigue, has been derived for relaxor piezoelectric materials based on the hierarchical relaxation process, typical of disordered systems such as random-field and glassy states and is given in terms of normalized remanent polarization (P̄ r) as P̄ r(t)=P̄ ot -xexp[-c(t/τ) β]. This function was verified by fitting the dynamics of the fatigue behavior in 0.92Pb(Zn 1/3Nb 2/3)O 3-0.08PbTiO 3 (PZN-PT) relaxor-based piezoelectric system. Mn modification of a PZN-PT single crystal improved the fatigue behavior by slowing down the relaxation processes and pinning the domain wall motion.
Original language | English (US) |
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Pages (from-to) | 3923-3927 |
Number of pages | 5 |
Journal | Journal of Applied Physics |
Volume | 92 |
Issue number | 7 |
DOIs | |
State | Published - Oct 1 2002 |
Externally published | Yes |