DTA/TG, XRD and 27 Al MAS NMR of yttrium aluminium garnet, Y 3 Al 5 O 12 by sol-gel synthesis

Azis, Rabaah Syahidah and Holland, Diane and Smith, Mark and Howes, Andrew P. and Zakaria, Azmi and Hassan, Jumiah and Saiden, Norlaily Mohd and Ikhwan, M. K (2013) DTA/TG, XRD and 27 Al MAS NMR of yttrium aluminium garnet, Y 3 Al 5 O 12 by sol-gel synthesis. Journal of the Australian Ceramics Society, 49 (2). pp. 74-80.

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Abstract

27Al magic angle spinning (MAS) NMR has been used at two fields (8.45 T and 14.1 T) to follow the optimisation of a sol-gel process to produce yttrium aluminium garnet, Y3Al5O12 (YAG), at moderate temperatures. 27Al MAS NMR is shown to be a highly sensitive tool to determine the presence of the impurity phase, yttrium aluminium perovskite, YAlO3. Single phase, polycrystalline YAG has been successfully synthesized, using this modified sol-gel process, at temperatures as low as 800°C. Chemical shifts, quadrupolar coupling constants and asymmetry parameters are reported for the tetrahedral and octahedral aluminium sites of YAG .

Item Type:
Journal Article
Journal or Publication Title:
Journal of the Australian Ceramics Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2503
Subjects:
Departments:
ID Code:
73615
Deposited By:
Deposited On:
14 Apr 2015 15:32
Refereed?:
Yes
Published?:
Published
Last Modified:
04 Oct 2020 03:39