Critical currents of ion-beam sputtered amorphous beryllium thin films and their application to an Abrikosov vortex memory

Minoru Okamoto, Koji Takei, Shugo Kubo, Masashi Mukaida, Kazunori Miyahara

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

Critical current and flux pinning were examined for ion-beam sputtered (IBS) amorphous beryllium (a-Be) thin films with Tc 6 K. Pinning forces in IBS a-Be films were one or more than one order of magnitude smaller than those for crystalline superconductors, but were still rather large for amorphous superconductors. The viscosity coefficient for IBS a-Be was very small, 1-2×10-9 N s/m2, which was only a few tenths as large as viscosity coefficients for other metallic superconductors. Write operation characteristics for Abrikosov vortex memory with an IBS a-Be vortex storage region was tested. The write current level was reduced to about two thirds of that for fine-grained PbInAu previously reported. IBS a-Be films were proved to be a potential material for use in an Abrikosov vortex memory.

本文言語英語
ページ(範囲)212-215
ページ数4
ジャーナルJournal of Applied Physics
62
1
DOI
出版ステータス出版済み - 12 1 1987
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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