Synthesis and characterization of nano-crystalline Ce_1-xGd _xO_2-x/2 (x = 0-0.30) solid solutions

TY - JOUR

T1 - Synthesis and characterization of nano-crystalline Ce1-xGd xO2-x/2 (x = 0-0.30) solid solutions

AU - Jadhav, L. D.

AU - Chourashiya, M. G.

AU - Jamale, A. P.

AU - Chavan, A. U.

AU - Patil, S. P.

N1 - Funding Information: The authors are thankful to UGC-DAE-IUC, Indore, and DRDO, New Delhi, for financial assistance. We would like to acknowledge Dr. D. Phase, UGC-DAE IUC Indore for extending SEM characterization facilities. Dr. M.G. Chourashiya is thankful to CSIR, New Delhi, for a senior research fellowship.

PY - 2010/9/17

Y1 - 2010/9/17

N2 - In recent years, doped ceria is an established and promising candidate as solid electrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC). In this investigation, synthesis and characterizations of nano-crystalline Gd doped ceria, (Ce1-xGdxO2-x/2, where x = 0-0.3), prepared using glycine-nitrate process (GNP) has been presented. Evolution of structural and morphological properties of nano-powders as a function of heat treatment has also been studied. The prepared samples were characterized using TG-DTA, FT-IR, Raman spectroscopy, XRD, SEM, etc. In addition, the effect of Gd content over the micro-structural properties of nano-crystalline Gd doped ceria was investigated. Raman analysis of calcined powders confirms the formation of the solid solution of Ce1-xGdxO2-x/2 instead of mixture of CeO2 and Gd2O3. The solid solutions obeyed Vegard's rule very well. Grain growth of sintered samples was observed to hinder with an increase in Gd content.

AB - In recent years, doped ceria is an established and promising candidate as solid electrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC). In this investigation, synthesis and characterizations of nano-crystalline Gd doped ceria, (Ce1-xGdxO2-x/2, where x = 0-0.3), prepared using glycine-nitrate process (GNP) has been presented. Evolution of structural and morphological properties of nano-powders as a function of heat treatment has also been studied. The prepared samples were characterized using TG-DTA, FT-IR, Raman spectroscopy, XRD, SEM, etc. In addition, the effect of Gd content over the micro-structural properties of nano-crystalline Gd doped ceria was investigated. Raman analysis of calcined powders confirms the formation of the solid solution of Ce1-xGdxO2-x/2 instead of mixture of CeO2 and Gd2O3. The solid solutions obeyed Vegard's rule very well. Grain growth of sintered samples was observed to hinder with an increase in Gd content.

KW - Ceramics

KW - Chemical synthesis

KW - Infrared spectroscopy

KW - Microstructure

KW - Raman spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=77956462627&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2010.07.058

DO - 10.1016/j.jallcom.2010.07.058

M3 - 文章

AN - SCOPUS:77956462627

SN - 0925-8388

VL - 506

SP - 739

EP - 744

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 2

ER -