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Crystallization process in xGd2O3(1-x)(0.95SiO20.05Na2O) ceramic system

I. COROIU1,* , Gh. BORODI2, I. VIDA SIMITI1, Al. DARABONT3, I. BRATU2, E. CULEA1, N. JUMATE1

Affiliation

  1. Technical University, St. Daicoviciu 15, 400084 Cluj-Napoca, Romania
  2. National Institute for Research and Development of Isotopic and Molecular Technology, 400084 Cluj-Napoca, Romania
  3. Babes-Bolyai University, 00084 Cluj-Napoca, Romania

Abstract

Glass-ceramics of xGd2O3(1-x)(0.95SiO2 0.05Na2O) composition were prepared by sol-gel method. This method was chosen because offers the advantage of a good chemical homogeneity and a better control of physical and chemical properties in comparison with traditional methods used to obtained glasses and ceramics. X-ray diffraction (XRD), scanning electron microscopy (SEM) and infrared spectroscopy (IR) were used to study the role of gadolinium ions and heat treatment temperature in the precipitation of the crystalline phases. The X-ray diffraction patterns show that addition of Gd2O3 exerts an important influence on the crystalization process of the studied samples. The crystaline phase decrease with increasing the Gd2O3 concentration. SEM and IR data support this assertion. The gadolinium ions play a network modifier role of the glass ceramic structure..

Keywords

Sol-gel, Glass-ceramic, Gadolinium oxide, XRD, IR, SEM.

Submitted at: Jan. 18, 2006
Accepted at: March 23, 2006

Citation

I. COROIU, Gh. BORODI, I. VIDA SIMITI, Al. DARABONT, I. BRATU, E. CULEA, N. JUMATE, Crystallization process in xGd2O3(1-x)(0.95SiO20.05Na2O) ceramic system, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 2, pp. 529-532 (2006)