Kinetic analysis of superconducting YBa2O7, by thermogravimetry in high vacuum

Kenzo Nagase, Hiroko Yokobayashi, Masae Kikuchi, Ayako Tokiwa, Yasuhiko Syono, Yoshiyuki Morioka

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Superconducting YBa2Cu3O7, was subjected to high vacuum thermogravimetry (TG) at various heating rates in the range from room temperature to 1000°C. Two distinct weight-loss steps, each of which corresponds to the evolution of almost 1/202, were observed on the TG curve. The product following the first step was apparently the non-stoichiometric compound YBa2Cu3O7-δ. The rate equation for the first step was dδ/dt = k(1-δ); the corresponding specific rate constant, k, was 1.8 × 10-3 s-1 at 490°C, the activation energy, Ea, was 75 kJ mol-1 and the frequency factor, A, was 3.0 × 102 s-1.

本文言語English
ページ(範囲)207-213
ページ数7
ジャーナルThermochimica Acta
175
2
DOI
出版ステータスPublished - 1991 3 15
外部発表はい

ASJC Scopus subject areas

  • 器械工学
  • 凝縮系物理学
  • 物理化学および理論化学

フィンガープリント

「Kinetic analysis of superconducting YBa<sub>2</sub>O<sub>7</sub>, by thermogravimetry in high vacuum」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。

引用スタイル