Effect of oxygen partial pressure on electrical conductivity of Ca-Ru-O compounds prepared by spark plasma sintering

Nittaya Keawprak, Rong Tu, Takashi Goto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Ca-Ru-O compounds were prepared by spark plasma sintering (SPS) using CaCO3 and RuO2 powders at various molar ratio of Ru to Ca (RRu/Ca). CaRuO3 in a single phase was obtained at R Ru/Ca= 1.0. A non-stoichiometric solid solution range of CaRuO 3 was identified at RRu/Ca = 0.7 to 1.0. The electrical conductivity (σ) showed metallic conduction behavior and increased with increasing RRu/Ca. The electrical conductivity at RRu/Ca = 0.8 to 1.0 increased with decreasing oxygen partial pressure (PO2) and the PO2 dependence of σ became significant with increasing temperature.

Original languageEnglish
Title of host publicationSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PublisherTrans Tech Publications Ltd
Pages595-598
Number of pages4
EditionPART 1
ISBN (Print)0878494626, 9780878494620
DOIs
Publication statusPublished - 2007 Jan 1
Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
Duration: 2007 Nov 52007 Nov 9

Publication series

NameMaterials Science Forum
NumberPART 1
Volume561-565
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
CountryKorea, Republic of
CityJeju
Period07/11/507/11/9

Keywords

  • CaRuO
  • Electrical conductivity
  • Oxygen partial pressure
  • Spark plasma sintering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Keawprak, N., Tu, R., & Goto, T. (2007). Effect of oxygen partial pressure on electrical conductivity of Ca-Ru-O compounds prepared by spark plasma sintering. In Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 (PART 1 ed., pp. 595-598). (Materials Science Forum; Vol. 561-565, No. PART 1). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-462-6.595