Combustion Synthesis Of Fine Particle Rare Earth Orthoaluminates And Yttrium Aluminum Garnet

Content Provider	Indian Institute of Science (IISc)
Author	Kingsley, J. J. Suresh, K. Patil, K. C.
Copyright Year	1990
Abstract	Fine particle rare earth orthoaluminates, $LnAlO_3$, where $Ln = La,$ Pr, Nd, Sm, Gd, Tb, and Dy, and yttrium aluminum garnet, $Y_3Al_5O_$ (YAG), have been prepared by a novel combustion process using corresponding rare earth nitrate, aluminum nitrate, and urea carbohydrazide mixtures. A saturated aqueous solution of the mixture when rapidly heated at 500ÀC foams and ignites to yield voluminous, crystalline single phase rare earth orthoaluminates in less than 5 min. The solid combustion products were characterized by XRD, SEM, TEM, particle size analysis, and surface area measurements. Rare earth orthoaluminates obtained have 3–4 m2 g surface area, with particle size in the range of$0.1-0.6 \mu m$ and an average agglomerate size of $4-5 \mu m$.
File Format	PDF
Journal	PeerReviewed
Language	English
Publisher	Academic Press Inc
Publisher Date	1990-10-01
Access Restriction	Authorized
Subject Keyword	Inorganic & Physical Chemistry
Content Type	Text
Resource Type	Article