Mahima Almeida, Saideep Shirish Bhat
This study explores the synthesis and structural characteristics of pristine and doped La2Zr2O7 and Gd2Zr2O7 with a focus on their sintering behavior. The pristine La2Zr2O7 was found to stabilize in defect pyrochlore structure, which evolves toward a more ordered pyrochlore structure upon high-temperature sintering, evidenced by the appearance and sharpening of superlattice reflections with increasing temperature. The (La₀.₈Gd₀.₂)₂Zr₂O₇ sample exhibited a similar behavior; however, the ordering process is sluggish due to the presence of Gd3⁺ ions. In contrast, the Gd2Zr2O7 and (La₀.₂Gd₀.₈)₂Zr₂O₇ samples were stabilized in a dual-phase structure with dominant defect fluorite structure with microdomains of pyrochlore as shown through XRD and Raman analysis. All the sintered samples displayed a stable microstructure; however, relatively finer nanocrystalline grains are observed in dual-phase Gd2Zr2O7 and (La0.2Gd0.8)2Zr2O7 samples. The combined influence of disorder-driven resistance offered by the fluorite phase and grain boundary pinning by the pyrochlore phase renders these systems highly suitable for applications demanding thermal stability and preservation of microstructural features.
@article{c84cb2c6-1f1d-4d98-8a53-7bd39e674533,
title={2026 Almeida Rare Earth Zirconates Sintering},
author={Mahima Almeida and Saideep Shirish Bhat},
year={2026},
language={en}
}TY - JOUR TI - 2026 Almeida Rare Earth Zirconates Sintering AU - Mahima Almeida AU - Saideep Shirish Bhat PY - 2026 LA - en ER -
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