@article{oai:repo.qst.go.jp:00046668, author = {Tsuyoshi, Tamegai and Toshihiro, Taen and Hidenori, Yagyuda and Shyam, Mohan and Tomotaka, Taniguchi and Yasuyuki, Nakajima and Satoru, Okayasu and Masato, Sasase and Hisashi, Kitamura and Takeshi, Murakami and Tadashi, Kambara and Yasuyuki, Kanai and 為ケ井 強 and 田縁 俊光 and 仲島 康行 and 北村 尚 and 村上 健}, issue = {8}, journal = {SUPERCONDUCTOR SCIENCE & TECHNOLOGY}, month = {Jul}, note = {Various kinds of energetic particles are irradiated into iron-based superconductors, and their effects on the critical current density (Jc) and vortex dynamics have been systematically studied. It is found that Jc is enhanced and vortex dynamics is strongly suppressed by energetic particles having a sufficient energy deposition rate, similar to the case of high temperature cuprate superconductors. The enhancement of Jc, in general, persists up to much higher irradiation doses than in cuprates. However, details of the effect of irradiation depend on the kind of ion species and their energies. Even with the same ions and energies, the effect is not universal for different kinds of iron-based superconductors. The correlated nature of defects created by heavy-ion irradiation is confirmed by the angular dependence of irreversible magnetization.}, title = {Effects of particle irradiations on vortex states in iron-based superconductors}, volume = {25}, year = {2012} }