Microstructure of MgB2 films deposited on YSZ/Hastelloy substrate

Satoshi Hata, Harini Sosiati, Yoshitsugu Tomokiyo, Noriyuki Kuwano, Akiyoshi Matsumoto, Masao Fukutomi, Hitoshi Kitaguchi, Kazunori Komori, Hiroaki Kumakura

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

Microstructures of MgB2 films on yttria-stabilized-zirconia (YSZ) /Hastelloy substrates were studied by analytical transmission electron microscopy. The MgB2 films with Mg-rich compositions were fabricated by pulsed laser deposition followed by annealing at 600°C or 680°C under Ar atmosphere. Fine grains of MgB2 and MgO crystals 5-30 nm in size that shows a good mutual connectivity are formed in the MgB2 films. The MgB2 films also form voids 5-100 nm in size that may contain amorphous or oxide phases. Two-dimensional elemental analyses revealed that Mg and O atoms are enriched near the MgB2/YSZ interface. From a comparison in microstructures between the 600°C- and 680°C-annealed MgB2 films, it is suggested that the films composed of finer grains of MgB2 exhibit a higher critical current density under high magnetic fields.

本文言語英語
ページ(範囲)648-655
ページ数8
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
68
9
DOI
出版ステータス出版済み - 9 2004

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

フィンガープリント 「Microstructure of MgB<sub>2</sub> films deposited on YSZ/Hastelloy substrate」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