Issue 8, 2004
From the journal:

Journal of Materials Chemistry

Phase evolution of yttrium aluminium garnet (YAG) in a citrate–nitrate gel combustion process

Xianzhong Guo,*a   P. Sujatha Devi,b   Bhuvaragasamy G. Ravi,a   John B. Parise,ac   Sanjay Sampatha  and  Jonathan C. Hansond  

* Corresponding authors

a Center for Thermal Spray Research, Department of Materials Science and Engineering, State University of New York, Stony Brook, NY 11794, USA
E-mail: xiguo@ic.sunysb.edu

b Electroceramics Division, Central Glass and Ceramic Research Institute, Kolkata 700032, India

c Department of Geosciences and Chemistry Department, State University of New York, Stony Brook, NY 11794, USA

d Department of Chemistry, Brookhaven National Laboratory, Upton, NY 11973, USA

Abstract

Yttrium aluminium garnet (YAG) powders were synthesized by a citrate–nitrate gel combustion process. Thermogravimetry (TG), differential thermal analysis (DTA), X-ray powder diffraction (XRD), and time-resolved X-ray powder diffraction experiments were used to study the phase evolution. Formation of the pure YAG phase depends on the level of precursor decomposition in the combustion process. Removal of undecomposed citric acid from the starting precursor powder helps to lower the temperature at which the YAG phase begins to form and the temperature at which the pure, highly crystalline YAG phase is obtained. The value of citrate to nitrate ratio in the precursor gel affects the phase evolution for YAG.

Graphical abstract: Phase evolution of yttrium aluminium garnet (YAG) in a citrate–nitrate gel combustion process

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Article information

DOI
https://doi.org/10.1039/B316434A
Article type
Paper
Submitted
16 Dec 2003
Accepted
25 Feb 2004
First published
17 Mar 2004

J. Mater. Chem., 2004,14, 1288-1292

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Phase evolution of yttrium aluminium garnet (YAG) in a citrate–nitrate gel combustion process

X. Guo, P. S. Devi, B. G. Ravi, J. B. Parise, S. Sampath and J. C. Hanson, J. Mater. Chem., 2004, 14, 1288 DOI: 10.1039/B316434A

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