Abstract
The coaction and competition between the ferroelectric field effect and the strain effect in Pr 0.5Ca 0.5MnO 3 (PCMO) film/0.67Pb(Mg 1/3Nb 2/3)O 3-0.33PbTiO 3 crystal heterostructures were studied. Based on different types of resistance-electric field hysteresis loops at various temperatures, it is clearly identified that the strain effect dominates over the ferroelectric field effect for temperature T above the charge-ordering temperature T CO of PCMO. With the strong localization of charge carriers for T T CO, the ferroelectric field effect strongly competes with the strain effect and finally dominates over the latter for T 0.8T CO. Moreover, the poling-induced strain effect is considerably enhanced by a magnetic field, demonstrating the important role of the phase separation in understanding the strain effect in such heterostructures.
| Original language | English |
|---|---|
| Article number | 172906 |
| Journal | Applied Physics Letters |
| Volume | 101 |
| Issue number | 17 |
| DOIs | |
| State | Published - 22 Oct 2012 |
| Externally published | Yes |