首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Improved piezoelectric property and bright upconversion luminescence in Er doped (Ba_(0.99)Ca_(0.01))(Ti_(0.98)Zr_(0.02))O_3 ceramics
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Improved piezoelectric property and bright upconversion luminescence in Er doped (Ba_(0.99)Ca_(0.01))(Ti_(0.98)Zr_(0.02))O_3 ceramics

机译:掺Er(Ba_(0.99)Ca_(0.01))(Ti_(0.98)Zr_(0.02))O_3陶瓷的压电性能和明亮的上转换发光

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摘要

Lead-free (Ba_(0.99)Ca_(0.01))(Ti_(0.98)Zr_(0.02))O_3 (BCZT) + x mol% (x = 0-0.8) Erbium (Er) ceramics were prepared using the solid-state reaction technique. Dielectric, ferroelectric, piezoelectric and photoluminescence properties were systematically studied. Greatly enhanced temperature stabilities of the piezoelectric properties were obtained in the temperature range from 20 to 100 °C. Broad ferroelectric phase (ortho-rhombic-tetragonal) transition (T_(O-T)) tuned by Er doping was deduced from the dielectric properties. With the increase of Er content, the T_(O-T) shifted towards low temperature, while Curie temperature (T_c) shifted towards high temperature. Furthermore, bright green (525 and 550 nm) and weak red (670 nm) emission bands were obtained under excitation (980 nm) at room temperature, corresponding to the transitions of ~2H_(11/2)/~4S_(3/2) -> ~4I_(15/2) and ~4F_(9/2) -> ~4I_(15/2), respectively. As multifunctional material, Er-doped BCZT ceramics show great potential in mechano-electro-optic integration and coupling device applications.
机译:无铅(Ba_(0.99)Ca_(0.01))(Ti_(0.98)Zr_(0.02))O_3(BCZT)+ x mol%(x = 0-0.8)使用固态制备b(Er)陶瓷反应技术。系统地研究了介电,铁电,压电和光​​致发光性质。在20至100°C的温度范围内,压电性能的温度稳定性大大提高。从介电特性推导了由Er掺杂调整的宽铁电相(正交-四方)转变(T_(O-T))。随着Er含量的增加,T_(O-T)向低温转变,居里温度(T_c)向高温转变。此外,在室温下在激发(980 nm)下获得了亮绿色(525和550 nm)和弱红色(670 nm)的发射带,对应于〜2H_(11/2)/〜4S_(3/2)的跃迁)->〜4I_(15/2)和〜4F_(9/2)->〜4I_(15/2)。掺Er的BCZT陶瓷作为一种多功能材料,在机电光集成和耦合设备应用中显示出巨大的潜力。

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