Abstract
In this study, new lead-free luminescent electrostrictive materials have been fabricated by introducing trivalent RE3+ (RE=Sm, Pr and Eu) as the activator into 0.93(Bi0·5Na0.5)TiO3–0.07BaTiO3 (BNBT7) ceramics. A high, purely electrostrictive effect with exceptionally good temperature-independent and fatigue-free behavior was obtained in RE-modified BNBT7 ceramics. These materials are also attractive for their strong photoluminescence with bright reddish-orange emission (RE=Sm) or red emission (RE=Pr, Eu) upon blue or green light excitation. These results suggest that this kind of materials has potential application as a multifunctional device by integrating its excellent luminescence and electrostrictive properties.
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