Keywords
PbZrO3-PbTiO3 (PZT), X ray diffraction (XRD), Ultra-Violet visible spectroscopy (UV-vis spectroscopy), Piezoelectric, Ferroelectric, Transverse optical mode (TO), Longitudinal optical mode (LO). PbZrO3-PbTiO3 (PZT), Nhiễu xạ tia X (X ray Diffraction, XRD), Phổ hấp thụ tử ngoại-khả kiến (UV-vis spectroscopy), Áp điện (piezoelectric), Sắt điện (ferroelectric), Dao động quang ngang (TO), Dao động quang dọc (LO).
How to Cite
ĐỖ LỆ, Q., & NGUYỄN THẾ, H. (2022). INFLUENCE OF THE CALCINATION TEMPERATURE ON THE STRUCTURE AND OPTICAL PROPERTIES OF K0.5Na0.5NbO3 NANOPOWDERS SYNTHESIZED BY SOL-GEL TECHNIQUE. Journal of Marine Science and Technology, 64(64), 28–30. Retrieved from https://jmst.vimaru.edu.vn/index.php/tckhcnhh/article/view/130
Abstract
K0,5Na0,5NbO3 (KNN) nano powder materials were fabricated by sol-gel method. The effect of the sintering temperatures on the structure and optical properties was also studied. The results of X ray diffraction indicated that KNN samples have the perovskite structure with an orthorhombic phase. Raman spectroscopy exhibited that there was a change in the scattering vibration modes at the different calcination temperatures. By increasing these temperatures, the optical band gap of the samples calculated in UV-vis absorption spectroscopy declined. Our work showed that KNN samples synthesized by sol-gel method has lowered the sintering temperature compared with some reported fabrication techniques.