Abstract
Temperature and electric field effects on rhombohedral ternary (PIN-PMN-PT) ferroelectric single crystals were comprehensively studied by x-ray diffraction. We have focused on how the individual phase transitions as well as the phase transition sequences depend on thermal and electrical history. Electric field-temperature phase diagrams have been constructed under [001] field-cooling and field-heating conditions. As happens to the phase of binary PMN-PT crystals [H. Cao, J. F. Li, D. Viehland, and G. Y. Xu, Phys. Rev. B 73, 184110 (2006)], the phase of the zero-field-cooled (ZFC) state is replaced by a monoclinic A ) phase in the field-cooled (FC) diagram. In particular, reciprocal-space mesh scans demonstrated that the phase was stable for crystals poled along the [001] crystallographic direction rather than the initial phase of the ZFC state. Furthermore, an -field-induced phase transformational sequence of → tetragonal was observed at constant temperature, revealing a gradual increase in the lattice parameter. These findings demonstrate that the ternary PIN-PMN-PT crystals exhibit common phase transition features with binary PMN-PT and (PZN-PT) ones for compositions in the low PT side of the morphotropic phase boundary.
5 More- Received 16 January 2014
- Revised 3 October 2014
- Corrected 30 October 2014
DOI:https://doi.org/10.1103/PhysRevB.90.134107
©2014 American Physical Society
Corrections
30 October 2014