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

doi:10.1016/j.physc.2009.11.051

Effects of heavy-ion irradiation on the vortex state in Ba(Fe _1-xCo_x)₂As₂

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

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We report effects of heavy-ion irradiation in Ba(Fe_1-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(Fe_1-xCo_x) ₂As₂ and cuprate superconductors are compared.

Original language	English
Pages (from-to)	S360-S362
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.11.051
Publication status	Published - 2010 Dec
Externally published	Yes

Keywords

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

Access to Document

10.1016/j.physc.2009.11.051

Cite this

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

abstract = "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.",

keywords = "Ba(FeCo)As, Columnar defects, Heavy-ion irradiation",

author = "T. Tamegai and Y. Tsuchiya and T. Taen and Y. Nakajima and S. Okayasu and M. Sasase",

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T1 - Effects of heavy-ion irradiation on the vortex state in Ba(Fe 1-xCox)2As2

AU - Tamegai, T.

AU - Tsuchiya, Y.

AU - Taen, T.

AU - Nakajima, Y.

AU - Okayasu, S.

AU - Sasase, M.

PY - 2010/12

Y1 - 2010/12

N2 - 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.

AB - 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.

KW - Ba(FeCo)As

KW - Columnar defects

KW - Heavy-ion irradiation

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