Modification of flux pinning properties of RE-Ba-Cu-O superconductor by irradiation

Noriko Chikumoto; Marcin Konczykowski; Takayuki Terai; Masato Murakami

doi:10.1088/0953-2048/13/6/323

Modification of flux pinning properties of RE-Ba-Cu-O superconductor by irradiation

Noriko Chikumoto, Marcin Konczykowski, Takayuki Terai, Masato Murakami

Research output: Contribution to journal › Conference article

8 Citations (Scopus)

Abstract

The effects of fast neutron irradiation and heavy-ion irradiation on the magnetization of RE-Ba-Cu-O single crystals were studied. The fast neutron irradiation introduces spherical cascade defects, whereas the heavy-ion irradiation creates columnar defects which penetrate throughout the sample. In both cases, we observed the enhancement of the magnetic hysteresis width and the reduction of the normalized creep rate, which implies the induced defects work effectively as pinning centres. However, we found there are some differences in the magnetization behaviour between the neutron-irradiated and the heavy-ion-irradiated samples, which may be explained in terms of differences in the defect morphology.

Original language	English
Pages (from-to)	749-752
Number of pages	4
Journal	Superconductor Science and Technology
Volume	13
Issue number	6
DOIs	https://doi.org/10.1088/0953-2048/13/6/323
Publication status	Published - 2000 Jun 1
Event	The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn Duration: 1999 Oct 19 → 1999 Oct 22

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ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Cite this

Chikumoto, N., Konczykowski, M., Terai, T., & Murakami, M. (2000). Modification of flux pinning properties of RE-Ba-Cu-O superconductor by irradiation. Superconductor Science and Technology, 13(6), 749-752. https://doi.org/10.1088/0953-2048/13/6/323

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N2 - The effects of fast neutron irradiation and heavy-ion irradiation on the magnetization of RE-Ba-Cu-O single crystals were studied. The fast neutron irradiation introduces spherical cascade defects, whereas the heavy-ion irradiation creates columnar defects which penetrate throughout the sample. In both cases, we observed the enhancement of the magnetic hysteresis width and the reduction of the normalized creep rate, which implies the induced defects work effectively as pinning centres. However, we found there are some differences in the magnetization behaviour between the neutron-irradiated and the heavy-ion-irradiated samples, which may be explained in terms of differences in the defect morphology.

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10.1088/0953-2048/13/6/323