Document

Doping Fe and Co Induced Modification in the Structural, Optical and Colossal Permittivity of Nb doped TiO2 Ceramics

Linked Agent
Title of Periodical
TRANSACTIONS OF THE INDIAN CERAMIC SOCIETY
Issue published
vol. 82, no. 4, pp. 307-312 (2023)
Country of Publication
United Kingdom
Place Published
Abingdon
Publisher
Taylor & Francis Group
Date Issued
2023
Language
English
English Abstract
ABSTRACT : Fe/Nb and Co/Nb co-doped TiO2 ceramics were synthesized by conventional ceramic solid-state reaction process in order to create a high dielectric permittivity substance. Comprehensive structural, optical and dielectric studies were carried out on the samples of formula Nb:TiO2, Fe:(TiO2 :Nb) and Co:(TiO2 :Nb). The structural and optical characterizations were performed with X-ray diffraction and diffuse reflection spectroscopy, respectively. The dielectric properties including colossal permittivity (CP) were investigated at room temperature in the frequency range of 0.1-100 kHz. The novelty of the present work was to create a CP (~104-105) in host TiO2 by cod oping with (Co/Nb) and study the change in the CP by using Fe ions instead of Co ions. The results were explained in the framework of the core/shell model and doping mechanisms.
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Identifier
https://digitalrepository.uob.edu.bh/id/52907722-9cda-423d-9c5c-b498861ba81f