Solubility limit and crystallization of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ

A. Hu, N. Sakai, M. Murakami

研究成果: Article査読

7 被引用数 (Scopus)

抄録

The phase relation and crystallization behavior were investigated in a series of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ (-0.1 ≤ x ≤ 0.3). The single phase rare earth (RE)-Ba substitution window (RE: Sm and Eu) was found to range from 0 to 0.3 when quenched from 1010 °C for nominal substitution parameter, x ≤ 0.05, from 990 °C for x = 0.1 and 0.2, and from 970 °C for x = 0.3 under ambient atmosphere. Onset Tc values were 94 K for x ≤ 0 and fell sharply with increasing x. After Ar post-annealing (ArPA), the countersubstitution of RE by Ba was observed associated with a slight improvement of onset Tc (0.5 K). A dramatic enhancement of onset Tc for the sample with RE rich composition (x > 0) was observed with ArPA. It was also found that crystallization rate was large for the compositions with x ≤ 0 while small for x > 0.

本文言語English
ページ(範囲)19-26
ページ数8
ジャーナルPhysica C: Superconductivity and its applications
371
1
DOI
出版ステータスPublished - 2002 6月 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

フィンガープリント

「Solubility limit and crystallization of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ」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