Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4929463
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Funding
- National Basic Research Program of China [2013CB632900]
- National Natural Science Foundation of China [50972071, 51172118]
- Tsinghua University Initiative Scientific Research Program
- State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing, China
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Antiferroelectric (Pb, La)(Zr, Sn, Ti)O-3 (PLZST) single crystals with composition in the vicinity of morphotropic phase boundary have been grown and studied. From electric measurements, Raman study, and observation of domain structures, we found an electric field induced antiferroelectric to ferroelectric phase transition accompanied with fifteen times of strain difference. After this phase transition, the metastable ferroelectric phase (FEin) is preserved with soften of A(1)(TO1) mode and increase of long-range force. Coexistence of tetragonal (T) and rhombohedral (R) domains has been observed in virgin sample. Electric field induced T to R phase transition is verified by both extinction angle and domain morphology changes. Clamping polar structure formed by the embedded R phase would contribute to increase of long-range force. The remarkable strain difference accompany with induced phase transition makes the PLZST single crystal a promising candidate for electric switch and actuator applications. (C) 2015 AIP Publishing LLC.
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