• Mohanty, Hari Sankar
• Sahu, Uttam Kumar
• Bhoi, Krishnamayee
• Rana, Gangadhar
• Samantaray, Soumya Sucharita
• Panda, Subhashree
• Padhi, Sagar
• Puhan, Tapendu Sundar
• Karmakar, Subrata
• Raut, Subhajit

Abstract

<jats:p>The development of lead-free ferroelectric materials is essential for upcoming applications in energy and information storage. We comprehensively report the structural, optical, dielectric and electrical characteristics of BaTi<jats:sub>1-<jats:italic>x</jats:italic></jats:sub>Co<jats:sub><jats:italic>x</jats:italic></jats:sub>O<jats:sub>3</jats:sub> (0.00 ≤ <jats:italic>x</jats:italic> ≤ 0.10) ceramics prepared using the conventional solid-state route process. The synthesized sample features a single-phase tetragonal structure with P4mm symmetry, as confirmed by the X-ray diffraction investigation. SEM imaging clearly shows that the material was polydispersive. UV–vis diffuse reflectance spectra of the BaTi<jats:sub>1-x</jats:sub>Co<jats:sub>x</jats:sub>O<jats:sub>3</jats:sub> ceramics has been carried out in order to calculate the optical band gap of each composition. For the prepared samples, Cole-Cole plot of the complex impedance was examined over a wide temperature and frequency range. The compounds displayed non-Debye type dielectric relaxation. The Ferroelectric-Paraelectric phase transition is clearly visible in the T-dependent dielectric spectra for all the samples. After E-poling the ceramics, a well-defined genuine saturated hysteresis loop was established.</jats:p>

Topics

• impedance spectroscopy
• compound
• phase
• scanning electron microscopy
• x-ray diffraction
• phase transition
• cobalt
• ceramic
• Barium