Introduction of flux pinning center in sintered Bi-2223 superconductors by 290 MeV/n 40Ar irradiation

Takeyuki Kikuchi, Makoto Nakanishi, Masahiro Nagae, Yoshihiro Kusano, Tatsuo Fujii, Jun Takada, Nakahiro Yasuda, Takeshi Murakami

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Bi-2223 bulk superconductors were irradiated with 290MeV/n 40Ar18+ ions. 40Ar18+ irradiation effects on flux pinning of Bi-2223, which were estimated as ΔM from magnetic hysteresis loops measured by SQUID and VSM, were discussed. Irradiated samples had enlarged magnetic hysteresis loops than unirradiated samples. Moreover, the increment of ΔM depended on depth from the irradiation surface. Microstructure of irradiated samples were observed by high-resolution transmission electron microscopy (HR-TEM). However, irradiation defects such as the columnar defects were not observed in these samples.

Original languageEnglish
Pages (from-to)994-998
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number9
Publication statusPublished - Sep 1999

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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