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

• Published in: Journal of materials science. Materials in electronics Vol. 32; no. 6; pp. 8017 - 8032
• Main Authors: Dastagiri, S., Pakardin, G., Babu, T. Anil, Lakshmaiah, M. V., Naidu, K. Chandra Babu
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-03-2021; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Diffraction patterns; Functional groups; Ions; Materials Science; Metal oxides; Morphology; Nanorods; Nanospheres; Optical and Electronic Materials; Spectrum analysis
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-05525-1

The Al
0.8
Gd
y
La
0.2-y
TiO
3
(
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 (E
g
) 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.