Modification of flux pinning properties of RE-Ba-Cu-O superconductor by fast-neutron and heavy-ion irradiation

Noriko Chikumoto, Marcin Konczykowski, Takayuki Terai, Masato Murakami

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

RE-Ba-Cu-O bulk samples and single crystals were exposed to fast-neutron and heavy-ion irradiation (HII). The fast-neutron irradiation introduces spherical cascade defects, whereas the HII creates the columnar defects that extend the entire sample. Dc magnetization measurements and magnetic relaxation experiments were performed with a SQUID magnetometer to study the effect of radiation-induced defects on flux pinning properties. In both cases, we observed an enhancement of critical current and a decrease of magnetic relaxation. However, there was a large difference in the observed Jc-B and Fp-B relations, which can be explained in terms of the difference in the defect structure and density.

Original languageEnglish
Pages (from-to)663-665
Number of pages3
JournalSuperconductor Science and Technology
Volume14
Issue number9
DOIs
Publication statusPublished - 2001 Sep
Externally publishedYes

Fingerprint

Flux pinning
Heavy Ions
flux pinning
fast neutrons
Ion bombardment
ion irradiation
Heavy ions
Superconducting materials
Magnetic relaxation
heavy ions
Neutrons
Defects
magnetic relaxation
defects
Defect structures
Neutron irradiation
Defect density
Critical currents
SQUIDs
Magnetometers

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Modification of flux pinning properties of RE-Ba-Cu-O superconductor by fast-neutron and heavy-ion irradiation. / Chikumoto, Noriko; Konczykowski, Marcin; Terai, Takayuki; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 14, No. 9, 09.2001, p. 663-665.

Research output: Contribution to journalArticle

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