Effects of Pt dispersion on electronic and oxide ionic conductivity in Pr1.90Ni0.71Cu0.24Ga0.05O4

T. Ishihara, J. Hyodo, H. Schraknepper, K. Tominaga, S. Ida

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

The effects of dispersing Pt particles in bulk Pr1.90Ni0.71Cu0.21Ga0.05O4+δ (PNCG) on the electrical conductivity and oxygen permeability of the material were studied. The different thermal expansion coefficients of PNCG and Pt generated a mechanical compressive strain in the PNCG. This may cause the electrical conductivity to decrease in samples containing Pt. In contrast, the oxide ion conductivity estimated from the oxygen permeability increased upon dispersion of Pt. These variations appear to be related to the electron hole and interstitial oxygen concentrations. Moreover, the present study suggests that the mechanical strain induces a chemical strain via the introduction of oxygen defects as well as changes in cation valences.

本文言語英語
ページ(範囲)11125-11131
ページ数7
ジャーナルPhysical Chemistry Chemical Physics
18
16
DOI
出版ステータス出版済み - 1 1 2016

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

フィンガープリント

「Effects of Pt dispersion on electronic and oxide ionic conductivity in Pr<sub>1.90</sub>Ni<sub>0.71</sub>Cu<sub>0.24</sub>Ga<sub>0.05</sub>O<sub>4</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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