Effects of Carbonate Defects on the Superconductivity of HgBa2CuO4+δ

Ayako Yamamoto, Wei Zhi Hu, Fujio Izumi, Takashi Kamiyama, Setsuko Tajima

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Carbon contents in HgBa2CuO4+δ and starting materials (HgO, BaO, and CuO) for preparing it were determined by infrared spectroscopy to examine influences of CO32- ions substituted for [HgO2]2- groups on its superconducting properties. Measurements of DC magnetic susceptibilities and resistivities revealed that superconducting transition in an oxygen-annealed sample with a minimum C content of 0.88 mol% was very sharp with Tc 's of 98.0 K (negative magnetization) and 96.5 K (zero resistance), respectively. They are the highest Tc 's that have ever been attained in HgBa2CuO4+δ including single crystals. Structural data obtained by neutron powder diffraction showed our sample to have high quality and a δ value of 0.122(5).

本文言語English
ページ(範囲)789-793
ページ数5
ジャーナルJournal of Low Temperature Physics
117
3-4
DOI
出版ステータスPublished - 1999
外部発表はい

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

フィンガープリント 「Effects of Carbonate Defects on the Superconductivity of HgBa<sub>2</sub>CuO<sub>4+δ</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。

引用スタイル