Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F

S. Adachi, X. J. Wu, T. Tamura, T. Tatsuki, A. Tokiwa-Yamamoto, K. Tanabe

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Superconducting La2CuO4-δFy samples were synthesized by heating La2CuO4 together with a fluorinating reagent, NH4F, at 240°C in flowing oxygen gas. Bulk superconductivity with Tc = 42 K in the samples was confirmed by DC magnetic susceptibility measurements. The enhancement in the orthorhombicity of the K2NiF4 phase (a = 5.319 Å, b = 5.442 Å, c = 13.20 Å) was observed. The lower and upper critical fields, Hc1(0) and Hc2(0), for the La2CuO4-δFy were roughly determined to be 98 Oe and 600 kOe, respectively.

本文言語English
ページ(範囲)59-66
ページ数8
ジャーナルPhysica C: Superconductivity and its applications
291
1-2
DOI
出版ステータスPublished - 1997 11月 15
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

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