Electric field-induced large strain and photoluminescence properties in SrRECoO4 (RE = Pr, Eu, Sm)-modified BNT-based ferroelectric ceramics
Electric field-induced large strain and photoluminescence properties in SrRECoO4 (RE = Pr, Eu, Sm)-modified BNT-based ferroelectric ceramics
复制标题
SrRECoO4 (RE = Pr、Eu、Sm) 改性 BNT 基铁电陶瓷的电场诱导大应变和光致发光特性
DOI：
10.1016/j.ceramint.2022.10.350
复制
发表时间：
2022-11
影响因子：
5.2
通讯作者：
Huarong Zeng
中科院分区：
文献类型：
--
作者：
Yang Liu;Lulu Liu;Peng Li;Peng Fu;Juan Du;Ziliang Li;Huaiyong Li;Jigong Hao;Wei Li;Huarong Zeng
(1-x)本文制备了（0.935BNT-0.065BaTiO3）-xSrRECoO 4（BNBT6.5-xSREC，RE = Pr，Eu，Sm）基无铅铁电陶瓷，该陶瓷具有大的电应变和光致发光效应。通过在BNBT6.5中引入SREC掺杂剂，破坏了陶瓷的长程铁电有序，在施加电场之前诱导了由极性纳米区主导的弱极性状态。由于PNR在电场作用下的可逆转变，大大促进了电应变。当SREC含量为0.012时，在70 kV/cm的电场下获得0.38-0.44%的大电场诱导大应变，相当于大信号d33 *（Smax/Emax）为543-586 pm/V。此外，依靠稀土离子在SREC中的发光效应，改性陶瓷表现出强的光致发光，具有明亮的红色或橙子发射，这取决于RE元素的类型。然而，由于SREC掺杂剂中的重金属（Co 3+）离子的光致发光猝灭效应，在具有较高SREC含量的样品中，强发射被强烈猝灭。猝灭模型可以基于Co 3+离子诱导的非辐射复合中心的形成，其影响RE 3+离子从激发态到基态的能量跃迁。
(1-x) (0.935BNT–0.065BaTiO3 )-xSrRECoO4 (BNBT6.5-xSREC, RE = Pr, Eu, Sm)–based lead-free ferroelectric ceramics with large electrostrain and photoluminescence effect were prepared in our work. Through introducing the SREC dopant into BNBT6.5, the long-range ferroelectric order of ceramics was disrupted, inducing a weak polar state dominated by polar nanoregions before applying an electric field. Due to the reversible transition of PNRs under the electric field, the electrostrain was greatly promoted. When the content of SREC was 0.012, large field-induced large strains of 0.38–0.44% were obtained under an electric field of 70 kV/cm, equivalent to a large signal d 33 * ( Smax/Emax ) of 543–586 pm/V. Moreover, relying on the luminescence effect of RE 3+ ions in SREC, the modified ceramics exhibited strong photoluminescence with bright red or orange emissions, depending on the type of RE elements. However, the strong emission was strongly quenched in samples with a higher SREC content due to the photoluminescence quenching effect of the heavy metal (Co3+) ions in the SREC dopant. The quenching model can be based on the formation of non-radiative recombination centers induced by Co3+ ions, which affect the energy transition of RE3+ ions from the excited state to the ground state.
登录
查看更多内容
影响因子：
17.6
作者：
Jiyue Wu;Haibin Zhang;Changgang Huang;Chiao-Wei Tseng;Nan Meng;V. Koval;Y. Chou;Zhen Zhang
通讯作者：
Jiyue Wu;Haibin Zhang;Changgang Huang;Chiao-Wei Tseng;Nan Meng;V. Koval;Y. Chou;Zhen Zhang
纳米级洞察无铅铁掺杂0.95(Na1/2Bi1/2)TiO3-0.05BaTiO3单晶的巨压电响应
影响因子：
4
作者：
Xue Saidong;Ma Jinpeng;Zhao Xiangyong;Wang Feifei;Sun Dazhi;Wang Tao;Shi Wangzhou;Fu Zhengqian;Zhou Huifang;Luo Haosu
通讯作者：
Luo Haosu
影响因子：
3.6
作者：
V. Chandra;B. P. Chandra;P. Jha
通讯作者：
V. Chandra;B. P. Chandra;P. Jha
影响因子：
3.2
作者：
Liu, Laijun;Shi, Danping;Chen, Jun
通讯作者：
Chen, Jun
影响因子：
4
作者：
Hiruma, Yuji;Imai, Yoshitaka;Takenaka, Tadashi
通讯作者：
Takenaka, Tadashi