期刊
JOURNAL OF APPLIED PHYSICS
卷 121, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4982910
关键词
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资金
- National Nature Science Foundation of China [51332002]
- Ministry of Science and Technology of China [2015CB654605]
Using piezoresponse force microscopy (PFM) and Raman spectroscopy, we studied the local temperature-dependent piezoelectric properties and phase structures of 0.95(Bi0.5Na0.5)TiO(3-)0.05BaTiO(3) (BNT-BT) single crystals. Local-area PFM revealed non-ergodic relaxor behavior around 160 degrees C. Switching spectroscopy-PFM (SS-PFM) results also supported the transition around 160 degrees C, with a gradual decrease in hysteresis width and nucleation bias. Moreover, Raman spectroscopy provided structural evidence of a phase transition in the same temperature region. These results are consistent with other theories of phase transitions in BNT-BT-based materials and verify the existence of a phase transition from a non-ergodic relaxor to ergodic relaxor of BNT-5.0%BT near 160 degrees C. Published by AIP Publishing.
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