Zidani Jacem, Alaoui Ilham Hamdi, Zannen Moneim, Birks Eriks, Chchiyai Zakaria, Majdoub Mustapha, Manoun Bouchaib, El Marssi Mimoun, Lahmar Abdelilah
Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific, Pole, 33 rue Saint-Leu, 80039 Amiens, France.
Laboratory of Interfaces and Advanced Materials (LIMA), Faculty of Sciences of Monastir, University of Monastir, Bd. of the Environment, Monastir 5019, Tunisia.
Materials (Basel). 2024 Apr 12;17(8):1783. doi: 10.3390/ma17081783.
The beneficial effects of lanthanide incorporation into 0.94NaBiTiO-0.06BaTiO (BNT-BT) matrix on its functional properties were investigated. The conventional solid-state method was used for synthesizing samples. The structural refinement revealed that all samples crystallized in R3c rhombohedral symmetry. Raman spectroscopy study was carried out using green laser excitation and revealed that no clear perceptible variation in frequency is observed. Dielectric measurements unveiled that the introduction of rare earth obstructed the depolarization temperature promoted in BNT-BT, the diffusive phase transition decreasing with increasing lanthanide size. Only dysprosium addition showed comparable diffusion constant and dielectric behavior as the unmodified composition. Further, the comparison of the obtained ferroelectric hysteresis and strain-electric field loops revealed that only Dy-phase exhibited interesting properties comparing parent composition. In addition, the incorporation of lanthanides Ln into the BNT-BT matrix led to the development of luminescence characteristics in the visible and near infrared regions, depending on the excitation wavelengths. The simultaneous occurrence of photoluminescence and ferroelectric/piezoelectric properties opens up possibilities for BNT-BT-Ln to exhibit multifunctionality in a wide range of applications.
研究了镧系元素掺入0.94NaBiTiO-0.06BaTiO(BNT-BT)基体对其功能特性的有益影响。采用传统的固态方法合成样品。结构细化表明,所有样品均以R3c菱面体对称性结晶。使用绿色激光激发进行拉曼光谱研究,结果表明未观察到频率有明显的可察觉变化。介电测量表明,稀土元素的引入阻碍了BNT-BT中促进的去极化温度,随着镧系元素尺寸的增加,扩散相变减小。只有添加镝时,其扩散常数和介电行为与未改性的成分相当。此外,对获得的铁电滞回线和应变-电场回路的比较表明,与母体成分相比,只有含镝相表现出有趣的特性。此外,将镧系元素Ln掺入BNT-BT基体中,根据激发波长的不同,会在可见光和近红外区域产生发光特性。光致发光与铁电/压电特性的同时出现,为BNT-BT-Ln在广泛应用中展现多功能性开辟了可能性。