The crystal structure, oxygen nonstoichiometry and chemical stability of Ba0.5Sr0.5Co0.8Fe0.2O 3-δ (BSCF)

Fang Wang, Takashi Nakamura, Keiji Yashiro, Junichiro Mizusaki, Koji Amezawa

研究成果: Article査読

22 被引用数 (Scopus)

抄録

The oxygen nonstoichiometry and the crystal structure of Ba 0.5Sr0.5Co0.8Fe0.2O 3-δ (BSCF) were investigated by using coulometric titration, high-temperature gravimetry and in situ HT-XRD. The chemical stability diagram of BSCF was established as a function of temperature between room temperature and 1373 K and oxygen partial pressure, p(O2), between 1 and 1 × 10-21 bar. The results showed that the cubic BSCF had poor chemical stability both under highly oxidative conditions at low temperatures and highly reductive conditions at high temperatures. The phase analysis of the decomposition products showed that the chemical instability of BSCF was mainly owing to the oxidation/reduction of trivalent Co ions. This journal is

本文言語English
ページ(範囲)7307-7314
ページ数8
ジャーナルPhysical Chemistry Chemical Physics
16
16
DOI
出版ステータスPublished - 2014 4 28

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

フィンガープリント 「The crystal structure, oxygen nonstoichiometry and chemical stability of Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O <sub>3-δ</sub> (BSCF)」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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