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Preparation and characterization of La0.8Sr0.2Ga0.8Mg0.1Co0.1O3 − δ electrolyte using glycine-nitrate process

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2013, 23(1), pp.37-43
  • DOI : 10.6111/JKCGCT.2013.23.1.037
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

옥경민 1 김경록 1 Taewan Kim 1 Kim Donghyun 1 박희대 2 Youlmoon Sung 2 PARK,HONG-CHAE 1 Seog-Young Yoon 1

1부산대학교
2경성대학교

Accredited

ABSTRACT

Conductivity of LSGMC materials were affected by secondary phase segregation, composition and synthetic route. La0.8Sr0.2Ga0.8Mg0.1Co0.1O3 − δ (LSGMC) powders were prepared using the glycine nitrate process to produce high surface area and compositionally homogeneous powders. The powders were synthesized with different 0.5, 1, 1.5, 2, 2.5 of glycine/cation molar ratios. A single perovskite phase from the synthesized powders was characterized with X-ray diffraction patterns. The obtained sintered pellets showed the dense grain microstructure. In case of 1.5 molar ratio, its density was higher than the others. The electrical conductivity measured at 800oC was observed to be 0.131 Scm−1. In addition, the linear thermal expansion behavior was indicated between 25oC and 800oC.

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This paper was written with support from the National Research Foundation of Korea.