Effects of heavy-ion irradiation on the vortex state in Ba(Fe 1-xCox)2As2

T. Tamegai, Y. Tsuchiya, T. Taen, Y. Nakajima, S. Okayasu, M. Sasase

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We report effects of heavy-ion irradiation in Ba(Fe1-xCo x)2As2 single crystals. The columnar defects with about 40% of the irradiation dose are confirmed by transmission electron microscopy. Magneto-optical imaging and bulk magnetization measurements reveal strong enhancement of the critical current density in the irradiated region. The vortex creep rate is also strongly suppressed by the columnar defects. Effects of heavy-ion irradiation into Ba(Fe1-xCox) 2As2 and cuprate superconductors are compared.

Original languageEnglish
Pages (from-to)S360-S362
JournalPhysica C: Superconductivity and its applications
Issue numberSUPPL.1
Publication statusPublished - 2010 Dec
Externally publishedYes


  • Ba(FeCo)As
  • Columnar defects
  • Heavy-ion irradiation

ASJC Scopus subject areas

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


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