Published December 2013 | Version v1
Journal article Metadata-only

Structural and electrical properties of Ce0.75(Gd0.95−xSrxCa0.05)0.25O2−δ thick film electrolyte

Creators

  • 1. Department of Electronics Materials Engineering, Kwangwoon University, Seoul (Korea, Republic of)
  • 2. Department of Ceramic Engineering, Gyeongsang National University, Jinju (Korea, Republic of)
  • 3. R and D Center, Samwha Capacitor, Yongin-si (Korea, Republic of)

Description

Graphical abstract: - Highlights: • Effects of Sr doping on electrical properties and structure were investigated. • The samples have higher conductivity and low activation energy. • Cause of increase oxygen vacancy concentration in the grain boundary. - Abstract: The effects of Sr doping on the electrical properties of Ce0.75(Gd0.95−xSrxCa0.05)0.25O2−δ (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05 mol%) electrolytes thick films were investigated. The samples sintered at 1400 °C for 8 h. X-ray diffraction (XRD) showed typical XRD patterns of a cubic fluorite structure, and the ionic conductivity was examined by AC impedance spectroscopy. From the experimental results, it was observed that Ce0.75(Gd0.95−xSrxCa0.05)0.25O2−δ (x = 0.04 mol%) electrolytes thick film have higher conductivity and minimum activation energy at 600 °C. This is explained in terms of the increased in the oxygen vacancy concentration at the grain boundary

Availability note (English)

Available from http://dx.doi.org/10.1016/j.materresbull.2013.05.068

Additional details

Identifiers

DOI
10.1016/j.materresbull.2013.05.068;
PII
S0025-5408(13)00447-9;

Publishing Information

Journal Title
Materials Research Bulletin
Journal Volume
48
Journal Issue
12
Journal Page Range
p. 5008-5012
ISSN
0025-5408
CODEN
MRBUAC

Conference

Title
5. international symposium on functional materials
Acronym
ISFM 2012
Dates
17-20 Dec 2012
Place
Perth, WA (Australia)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45111820
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACTIVATION ENERGY; CONCENTRATION RATIO; ELECTROLYTES; FILMS; FLUORITE; GRAIN BOUNDARIES; IONIC CONDUCTIVITY; OXYGEN; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; DIFFRACTION; DIMENSIONLESS NUMBERS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; ENERGY; HALIDE MINERALS; MICROSTRUCTURE; MINERALS; NONMETALS; PHYSICAL PROPERTIES; SCATTERING

Optional Information

Copyright
Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.