Influence of columnar defects on pinning parameters in high-Tc superconductors

Masakazu Haruta; T. Fujiyoshi; T. Sueyoshi; K. Miyahara; T. Ikegami; K. Ebihara; R. Miyagawa; N. Ishikawa; Satoshi Awaji; Kazuo Watanabe

doi:10.1016/j.physc.2004.02.194

Influence of columnar defects on pinning parameters in high-T_c superconductors

Masakazu Haruta, T. Fujiyoshi, T. Sueyoshi, K. Miyahara, T. Ikegami, K. Ebihara, R. Miyagawa, N. Ishikawa, Satoshi Awaji, Kazuo Watanabe

High Field Laboratory for Superconducting Materials

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

8 Citations (Scopus)

Abstract

The influence of columnar defects introduced by the heavy-ion irradiation on the pinning parameters in YBa₂Cu₃O_7-δ thin films was investigated. The pinning parameters n, J_cm and ΔJ_c were derived by fitting the experimentally obtained E-J characteristics to the theoretical curves calculated from the percolation transition model. The values of n and J_cm have been increased and the value of ΔJ_c has been decreased by the introduction of columnar defects.

Original language	English
Pages (from-to)	511-514
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.02.194
Publication status	Published - 2004 Oct 1

Keywords

Columnar defects
E-J characteristics
High-T superconductors
Pinning parameters

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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Influence of columnar defects on pinning parameters in high-T_c superconductors. / Haruta, Masakazu; Fujiyoshi, T.; Sueyoshi, T.; Miyahara, K.; Ikegami, T.; Ebihara, K.; Miyagawa, R.; Ishikawa, N.; Awaji, Satoshi; Watanabe, Kazuo.

In: Physica C: Superconductivity and its applications, Vol. 412-414, No. SPEC. ISS., 01.10.2004, p. 511-514.

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

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abstract = "The influence of columnar defects introduced by the heavy-ion irradiation on the pinning parameters in YBa2Cu3O7-δ thin films was investigated. The pinning parameters n, Jcm and ΔJc were derived by fitting the experimentally obtained E-J characteristics to the theoretical curves calculated from the percolation transition model. The values of n and Jcm have been increased and the value of ΔJc has been decreased by the introduction of columnar defects.",

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AU - Ebihara, K.

AU - Miyagawa, R.

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AU - Awaji, Satoshi

AU - Watanabe, Kazuo

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