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Rapid synthesis of nanocrystalline YAG via microwave-assisted solvothermal process
journal contribution
posted on 2018-07-09, 13:26 authored by Prabhu Ramanujam, Vaidhy VaidhyanathanVaidhy Vaidhyanathan, J.G.P. Binner, Shaghayegh Ghanizadeh, Zhaoxia ZhouZhaoxia Zhou, Chris SpacieA rapid synthesis procedure for the preparation of nanocrystalline yttrium aluminium garnet (nYAG) particles has been developed, for the first time, using the combination of subcritical conditions and microwave irradiation. It is believed that the use of butanediol delayed the onset of pressure rise due to its low partial pressure, while the microwaves facilitated a selective crystallization of nanocrystalline YAG particles in the solvent medium. This methodology was found to encourage rapid bulk nucleation with minimal particle growth or agglomeration of nYAG particles. The resultant powder characteristics, examined using XRD and TEM analyses, revealed that a narrow window of pressure and temperature conditions needed to be maintained to achieve spherical particles in the size range 60‐80 nm without any intermediate phases being formed. The STEM/EDX and FTIR results obtained suggested that the nucleated YAG particles were masked by carbon clouds until they were completely crystallized into single phase YAG particles; this allowed them to be dispersed in water with little agglomeration.
Funding
The authors would like to thank Morgan Advanced Materials, Swansea, UK, as well as EPSRC for financial support.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Published in
Journal of American Ceramics SocietyCitation
RAMANUJAM, P. ... et al, 2018. Rapid synthesis of nanocrystalline YAG via microwave-assisted solvothermal process. Journal of the American Ceramic Society, 101(11), pp. 4864-4869.Publisher
Wiley © The American Ceramic SocietyVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2018-05-20Publication date
2018-06-02Notes
This is the peer reviewed version of the following article: RAMANUJAM, P. ... et al, 2018. Rapid synthesis of nanocrystalline YAG via microwave-assisted solvothermal process. Journal of the American Ceramic Society, 101(11), pp. 4864-4869, which has been published in final form at https://doi.org/10.1111/jace.15815. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.ISSN
0002-7820eISSN
1551-2916Publisher version
Language
- en