Enhanced dielectric and electrical properties of Ba(1−x)Nd2x∕3Zr0.1Ti0.9O3 (0.00 ≤ x ≤ 0.04) electroceramics for high temperature-based energy storage devices.

The demand for high-temperature endurable dielectric materials with higher thermal stability in electronic systems operating under extreme temperatures sets a significant channel for the electronic industry. This work focuses on the dielectric and impedance behavior for lead-free Ba 1− x Nd 2 x ∕3 Zr 0.1 Ti 0.9 O 3 (BNZT); (0.00 ≤ x ≤ 0.04) between 300 ∘C – 400 ∘C and synthesized by conventional solid-state reaction method at optimum temperatures. Structural characterizations confirmed the tetragonal (P 4 mm symmetry) structure formations for the BNZT ceramics. XPS analysis confirmed the Nd-substitution at the Ba-site in the BNZT ceramics. FE-SEM study showed grain growth reduction with enhanced grain boundaries. The dielectric study showed lower dielectric loss with enhanced dielectric permittivity at high temperatures. Impedance analysis confirmed the negative temperature coefficient of resistance (NTCR) and non-Debye type behavior with higher thermal stability. Singly-ionized oxygen vacancies mainly govern the conduction process in BNZT ceramics. Enhanced dielectric and impedance properties suggest that Nd-substituted BNZT electroceramics are promising materials for applications in high-temperature-based energy storage systems. • Ba 1−x Nd 2 x ∕3 Zr 0.1 Ti 0.9 O 3 (BNZT; 0.00≤ x ≤0.04) electro-ceramics have been successfully synthesized using solid-state reaction method. • Structural analyses confirm the tetragonal phase (P4mm) formation with the Nd-substituted at the Ba-site in BNZT ceramics. • Enhanced dielectric permittivity with lower dielectric loss is observed in Nd-substituted BNZT ceramics. • Impedance study shows enhanced electrical properties with NTCR behavior and higher grain boundary effect in BNZT ceramics. • Conduction process is mainly governed by singly-ionized oxygen vacancies with the non-Debye type behavior in BNZT ceramics. [ABSTRACT FROM AUTHOR]