Process—structure correlations in co-precipitation synthesized lanthanum zirconates
Document Type
Article
Publication Title
Materials Research Express
Abstract
Rare Earth Zirconates with pyrochlore/flourite structure have attracted interests owing to their immense potential in modern technological applications. Among these, Lanthanum Zirconates are a promising top coat thermal barrier material and also a candidate nuclear waste host matrix for radionuclide immobilization. Despite its candidacy for these high-tech applications, the fundamental questions related to process—structure—property correlation still lacks a thorough understanding and this article is an attempt to bridge this gap. The current study investigates the microstructural characteristics of Lanthanum Zirconate powders synthesized using co-precipitation method under various pH, annealing temperature and hold durations. An evolution from disordered to ordered pyrochlore structure is observed at a relatively lower annealing temperature of 950 °C, as investigated through x-ray diffraction and Raman spectroscopy, confirmed via synchrotron investigations. Further examinations of the samples synthesized at varied pH conditions indicated a relatively high surface area and stable microstructure with a lower propensity for grain growth for the samples synthesized at pH 11. The comprehensive material microstructural information as a function of process conditions studied here is thought to be crucial for microstructure tailoring in both pristine and doped Lanthanum Zirconates.
DOI
10.1088/2053-1591/ad719f
Publication Date
9-1-2024
Recommended Citation
Bhat, Saideep Shirish; Irshad, K. A.; Almeida, Mahima; and Sivakumar, M., "Process—structure correlations in co-precipitation synthesized lanthanum zirconates" (2024). Open Access archive. 10079.
https://impressions.manipal.edu/open-access-archive/10079
