4-fold enhancement in the critical current density of YBa{sub 2}Cu{sub 3}O{sub 7} films by practical ion irradiation

Journal Article · Mon Dec 03 00:00:00 EST 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4769836· OSTI ID:22089582

Matsui, H.; Ogiso, H.; Yamasaki, H.; Kumagai, T.; Sohma, M.; Yamaguchi, I.; Manabe, T. ^[1]

---

1. National Institute of Advanced Industrial Science and Technology, Tsukuba 3058565 (Japan)

We report an up-to-4-fold enhancement in the in-magnetic-field critical current density at 77 K of epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} films on CeO{sub 2}-buffered SrTiO{sub 3} substrates by 3-MeV Au{sup 2+} irradiation. This indicates that irradiation using an industrially practical ion beam, which generally has kinetic energy less than 5 MeV, can provide a substantial increase in the in-field current performance of high-temperature superconductor films. Transmission electron microscopy results show that point-like defects smaller than 6 nm in diameter were created in the films by the irradiation.

• OSTI ID: 22089582
• Journal Information: Applied Physics Letters, Vol. 101, Issue 23; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM COMPOUNDS
CERIUM OXIDES
CRITICAL CURRENT
CUPRATES
EPITAXY
FILMS
GOLD IONS
HIGH-TC SUPERCONDUCTORS
ION BEAMS
IRRADIATION
MAGNETIC FIELDS
MEV RANGE 01-10
POINT DEFECTS
STRONTIUM TITANATES
SUBSTRATES
TEMPERATURE RANGE 0065-0273 K
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM COMPOUNDS