検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Effects of heavy-ion irradiation on the vortex state in Ba(Fe$$_{1-x}$$Co$$_{x}$$)$$_{2}$$As$$_{2}$$

Ba(Fe$$_{1-x}$$Co$$_{x}$$)$$_{2}$$As$$_{2}$$の磁束量子状態への重イオン照射効果

為ヶ井 強*; 土屋 雄司*; 田縁 俊光*; 仲島 康行*; 岡安 悟 ; 笹瀬 雅人*

Tamegai, Tsuyoshi*; Tsuchiya, Yuji*; Taen, Toshihiro*; Nakajima, Yasuyuki*; Okayasu, Satoru; Sasase, Masato*

単結晶Ba(Fe$$_{1-x}$$Co$$_{x}$$)$$_{2}$$As$$_{2}$$への重イオン照射効果を報告する。透過顕微鏡観察で円柱状欠陥が照射量の40%程度形成されることが確かめられた。磁気光学映像法およびバルク磁化測定から照射領域での臨界電流密度の大幅な増大が確認された。磁束クリープ緩和率は円柱状欠陥の導入で大きく制限される。Ba(Fe$$_{1-x}$$Co$$_{x}$$)$$_{2}$$As$$_{2}$$への重イオン照射効果を銅酸化物超伝導体と比較する。

We report effects of heavy-ion irradiation in Ba(Fe$$_{1-x}$$Co$$_{x}$$)$$_{2}$$As$$_{2}$$ 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(Fe$$_{1-x}$$Co$$_{x}$$)$$_{2}$$As$$_{2}$$ and cuprate superconductors are compared.

Access

:

- Accesses

InCites™

:

パーセンタイル:7.06

分野:Physics, Applied

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.