Colossal dielectric behavior in Al0.8GdyLa0.2-yTiO3 (y = 0.01–0.04) nanostructures

The Al0.8GdyLa0.2-yTiO3 (y = 0.01–0.04)/AGLT nanoflowers were synthesized via the hydrothermal method. X-ray diffraction patterns showed the polycrystalline nature of AGLT samples, wherein the maximum intense peak was recorded at 13.472°. The surface morphology revealed the nanoflowers, nanospheres, and nanorods like structures for all samples. Furthermore, the optical band gap (Eg) was determined using UV–Visible spectra. The FTIR spectra indicated the existence of metal oxide bonds and other functional groups. The colossal dielectric behavior was observed for y = 0.01 content. The dielectric modulus and impedance spectroscopy properties were elucidated as a function of frequency and composition.