Effect of the magnet insertion on the performance of a superconducting pump

M. Kondo, K. Inoue, N. Koshizuka, H. Seki, M. Murakami, M. Hiragushi, S. Akiyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


For medical and semiconductor fabrication lines, an ultra-clean and impurity-free environment is often required. In order to realize such a contaminant-free environment, it is desirable to employ a completely non-contact rotating mechanism. Such a non-contact rotation is possible by using a combination of permanent magnets and bulk superconductors. Furthermore, it is necessary to rotate a superconducting pump stably for practical applications. With the aim of increasing the stiffness of rotational parts, we placed a permanent magnet at the bottom such that the superconductors are sandwiched by top and bottom magnets. It was confirmed that the stiffness could surely be improved by arranging lower permanent magnets.

Original languageEnglish
Pages (from-to)134-137
Number of pages4
JournalPhysica C: Superconductivity and its applications
Publication statusPublished - 2014 Sept 15


  • Bulk Y-Ba-Cu-O
  • Levitation
  • Permanent magnet
  • Superconducting pump

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Effect of the magnet insertion on the performance of a superconducting pump'. Together they form a unique fingerprint.

Cite this