新しいZrCuSiAs型超伝導体:ThFeAsN
Cao Wang1, Zhi-Cheng Wang2, Yu-Xue Mei1
1Department of Physics, Shandong University of Technology , Zibo 255049, China.
Journal of the American Chemical Society
|February 9, 2016
まとめ
研究者らはThFeAsNという 新しい窒素含有鉄プニクチド超伝導体を発見しました この材料は30Kの超伝導性を示し 凝縮物質物理学の研究に 新たな道を開きます
科学分野:
- 凝縮物質物理学
- 材料科学
- 固体化学
背景:
- 鉄プニクチド超伝導体は,ユニークな電子特性を有する重要な材料のクラスです.
- 超伝導体技術の進歩には,新しい組成の探求が不可欠です.
- 超伝導体に窒素を組み込むことは まだ未知の分野です
研究 の 目的:
- 窒素を含む新しい鉄プニクチド超伝導体を合成し,特徴づけること.
- 新しく発見された化合物の 超伝導性を調べるために
- ThFeAsNの結晶構造と格子パラメータを決定する.
主な方法:
- 合成のための空いた容器での固体反応.
- クリスタル構造の決定のためのX線 difraktion (ZrCuSiAsタイプ,P4/nmm空間群).
- 超伝導性を検出するための電気抵抗性とDC磁気感受性の測定.
主要な成果:
- 窒素を含む鉄プニクチド超伝導体ThFeAsNの合成に成功しました.
- 格子パラメータ a = 4.0367(1) Å と c = 8.5262(2) Å で結晶構造の決定
- 30 Kの臨界温度 (Tc) で名目的にドーピングされていないThFeAsNにおける超伝導性の観測.
結論:
- ThFeAsNは,窒素を含む鉄プニクチド超伝導体として初めて報告されました.
- この発見は,既知の超伝導体の一族を拡大し,窒素ドーピングの可能性を強調しています.
- ThFeAsNに関するさらなる研究は,超伝導性のメカニズムのより深い理解につながる可能性があります.
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