Abstract
The authors have investigated the temperature dependence of the ferroelectric, dielectric, and structural properties of 70%Pb(Mg 1/3Nb2/3)O3-30%PbTiO3 thin films. Two critical temperatures were evidenced. The first one occurring around 410 K corresponds to the bulk paraelectric-ferroelectric phase transition and the second one around 200 K is rather related to a self-arrangement of small domains into macrodomains in order to minimize elastic energies. A multiscale domainlike structure is induced and the temperature evolution of such complex structure can be revealed through pronounced changes occurring in the nonlinear dielectric susceptibility.
| Original language | English |
|---|---|
| Article number | 132904 |
| Journal | Applied Physics Letters |
| Volume | 90 |
| Issue number | 13 |
| DOIs | |
| State | Published - 2007 |
| Externally published | Yes |