LAUSR

A series of Ba1−xLaxTiO3 (x = 0.2, 0.4, 0.6, & 0.8) nanorods were synthesized through hydrothermal method. The X-ray diffraction patterns indicated the cubic phases for x = 0.2 – 0.8 contents. The TEM pictures revealed the formation of nanorods of high length. The Tauc’s plots showed the wide band gap (Eg) for x = 0.2 & 0.6 compositions while the narrow band gap was noticed for x = 0.4 & 0.8 contents. At low-frequency (dielectric constant = − 1051.4 at log ω = 2.4627) values, the negative dielectric constant and dielectric loss were observed at x = 0.2. This behavior was similar to the metamaterial. At 8 MHz frequency, the high dielectric constant of 35.7 was noticed for x = 0.2. In addition, the frequency dependence of ac-electrical conductivity was also studied.