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Hydrothermal synthesis of Ba1−xLaxTiO3 (x = 0.2, 0.4, 0.6, & 0.8) nanorods: structure, morphology, optical band gap, and dielectricity behavior

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Abstract

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.

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Acknowledgements

The author would like to thank Deanship of Scientific Research at Majmaah University for supporting this work under Project Number No. R-1441–160.

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    D. Baba Basha

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Baba Basha, D. Hydrothermal synthesis of Ba1−xLaxTiO3 (x = 0.2, 0.4, 0.6, & 0.8) nanorods: structure, morphology, optical band gap, and dielectricity behavior. J Mater Sci: Mater Electron 31, 16448–16458 (2020). https://doi.org/10.1007/s10854-020-04199-5

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