Exploring the underlying mechanisms behind the increased far infrared radiation properties of perovskite-type Ce/Mn co-doped ceramics

Deng, Yi and Zhang, Kewei and Shi, Xiuyuan and Dong, Taosheng and Yang, Lei and Yang, Weizhong and Hong, Min and Wang, Yuan and Dargusch, Matthew and Chen, Zhi-Gang (2019) Exploring the underlying mechanisms behind the increased far infrared radiation properties of perovskite-type Ce/Mn co-doped ceramics. Materials Research Bulletin, 109. pp. 233-239. ISSN 0025-5408

Abstract

In this study, we report a solid-state synthesis of a novel Ce/Mn co-doped LaAlO3 ceramic with high far infrared emissivity. After detailed analysis of the infrared absorption and emission of the Ce/Mn co-doped LaAlO3 ceramics, we find that the synergistic effect of Ce/Mn co-doping is the key factor to promoting the infrared emission properties of the co-doped perovskite-type ceramic in 8–14 μm range. Compared with the pristine LaAlO3, La0.7Ce0.3Mn0.4Al0.6O3 sample displays the highest emissivity as high as 0.915. From the structural analysis, it is found that the occupation of irregular polyhedrons (A-site) by Ce4+ ion induces the generation of Mn2+ in the octahedral center (B-site), leading to the unit cell volume expansion and obvious lattice deformation. These structural alterations consequently improve the vibration of AlOMn and MnOMn for enhancement of infrared radiation performance. The perovskite-type ceramic, which exhibits a high far infrared emissivity, displays a promising future in energy-saving applications.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 20 Dec 2019 06:07
Last Modified: 28 Jan 2020 23:34
Uncontrolled Keywords: Far infrared emission; LaAlO3; Co-doping; Perovskite; Ceramic
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Identification Number or DOI: 10.1016/j.materresbull.2018.09.042
URI: http://eprints.usq.edu.au/id/eprint/35876

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