Non-stoichiometric gadolinium zirconate transparent ceramics with less Gd content

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-05 DOI:10.1016/j.optmat.2025.116895

Jianjun Zeng , Kuibao Zhang , Baozhu Luo

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引用次数: 0

Abstract

The non-stoichiometric design concept can effectively regulate internal defects in materials. Therefore, it can be applied to the fabrication of gadolinium zirconium oxide transparent ceramics to guide defect formation and promote the sintering process of the ceramics. In this study, transparent ceramics of non-stoichiometric Gd_2+XZr₂O_7+3X/2 with reduced Gd content were synthesized using a well-established combustion method combined with vacuum sintering. The XRD and TEM analyses revealed the presence of numerous defects within the crystal, leading to lattice shrinkage. These introduced defects significantly facilitated the sintering process, resulting in ceramics with high optical transmittance and large grain sizes. Furthermore, the band gap was found to vary correspondingly with changes in lattice parameters. These findings demonstrate that non-stoichiometric design provides an effective strategy to modulate defect concentration, enhance optical properties, and tune the band gap of the material.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.