期刊
APPLIED PHYSICS LETTERS
卷 102, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4805360
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资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB595]
- AINSE
- ARC [DP120103968]
The stability of electrically induced long-range ferroelectric order in a relaxor 0.94(Bi1/2Na1/2) TiO3-0.06BaTiO(3) ceramic material has been investigated by temperature-dependent X-ray diffraction and electrical property measurements. The depolarization and ferroelectric-to-relaxor transition are identified as separate and discrete processes. It is observed that the induced ferroelectric domains first lose their ferroelectric/ferroelastic texture coincident with a peak signal in the thermally induced depolarization current. With further increase in temperature, the detextured ferroelectric domains are dissociated into nanoscale entities. This fragmentation marks the ferroelectric-to-relaxor transition. It is suggested that the ferroelectric-to-relaxor transition has features of a second order phase transition. (C) 2013 AIP Publishing LLC.
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