Paper Title:
Y3Al5O12 Nanocrystallites Prepared from a Novel Crystalline Precursor
  Abstract

A novel crystalline precursor for preparing Y3Al5O12 (YAG) nanocrystallite was synthesized via a co-precipitation method using (NH4)2CO3 solution as the precipitator. The precursor was characterized by means of powder X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), thermal gravimetry (TG), differential thermal gravimetry (DTG) and differential scanning calorimetry (DSC), respectively. The empirical chemical formula of the crystalline precursor can be expressed as 5[(NH4)2Al6(CO3)3(OH)14]×9[Y2(CO3)3×3H2O] according to the test results. The measured weight loss of 46.7% of the precursor without consideration of the absorbed water is in accord with the calculated value of 47.5% according to the above empirical formula. The phase-pure YAG nanocrystallites were obtained by calcining the above precursors at 900°C for 2 hours in air atmosphere. Transmission electronic microscopy (TEM) result showed that the particle size of YAG nanocrystallites is 40-80 nm. The mechanism of themal decomposition of the crystalline precursor was also presented.

  Info
Periodical
Advanced Materials Research (Volumes 306-307)
Chapter
Chapter 9: Nano Materials
Edited by
Shiquan Liu and Min Zuo
Pages
1142-1147
DOI
10.4028/www.scientific.net/AMR.306-307.1142
Citation
R. J. Han, D. Gao, K. Z. Chen, "Y3Al5O12 Nanocrystallites Prepared from a Novel Crystalline Precursor", Advanced Materials Research, Vols. 306-307, pp. 1142-1147, 2011
Online since
August 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhi Jun Xu, Rui Qing Chu, S.C. Cui, Jin Son Zhang
Abstract:Mixed-conducting ceramic oxide SrFeCo0.5Oy powders were prepared by a citrate method, and the contributing factors to the formation of...
971
Authors: Jia Huan Xu, Hua Ke, De Chang Jia, Wen Wang, Yu Zhou
Abstract:The present investigation reports on the preparation of BiFeO3 nanopowders by a sol-gel method using acetylacetone as a stabilizer....
314
Authors: Li Li Wang, Jin Chen, Guang Cheng Yang, Fu De Nie
Micro/Nano Materials
Abstract:A carbonate precursor with high sintering activity was prepared by co-precipitation method under ultrasonic radiation. This precursor...
839
Authors: Chun Lin Fu, Meng Huo, Wei Cai, Xiao Ling Deng
Abstract:BiFeO3 powders were prepared by sol-gel process and calcined at different temperatures. The DTA curve shows an obvious exothermic...
142
Authors: Xiao Yan Zhang, Wen Shu Hu, Xi Wei Qi, Gui Fang Sun, Jian Quan Qi, Huan Huan Chen, Rui Xia Zhong
Abstract:Bi2Al4O9 powders were prepared by sol-gel process. The precursors were heated at 500-800°C for 2h to obtain Bi2Al4O9 powder and X-ray...
34