Abstract
We have studied the effect of heavy-ion irradiation on the transport properties of YBa 2 Cu 3 O x thin films. Columnar defects parallel to the c axis (0°) and crossed columnar defects with various inclination angles (θ= ± 10°, ± 20°, and ± 40°) were introduced into films by 1.3 GeV U-ion irradiation with dose equivalent to 1 T vortex density. Transport properties including irreversibility fields, activation energies, and critical current densities have been measured in magnetic fields applied parallel to the c axis. The best transport properties were observed in samples of θ = ± 10° in most of the H-T plane we studied, consistent with the splay model. However, the relative enhancement of the critical current density in the θ= ± 10° compared to the 0° sample was not as large as in the case of a single crystal suggesting that in films the point defects also play an important part in flux pinning.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 310-316 |
| Number of pages | 7 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 281 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 10 1997 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Enhanced transport properties in YBa 2 Cu 3 O x films with crossed columnar defects of various inclination angles . / Park, J. H.; Kim, D. H.; Shim, S. Y.; Kim, Y. H.; Lee, J. M.; Hahn, T. S.; Hettinger, Jeffrey; Steel, D. G.; Gray, K. E.; Glagola, B.; Lee, J.; Khim, Z. G.
In: Physica C: Superconductivity and its Applications, Vol. 281, No. 4, 10.08.1997, p. 310-316.Research output: Contribution to journal › Article
TY - JOUR
T1 - Enhanced transport properties in YBa 2 Cu 3 O x films with crossed columnar defects of various inclination angles
AU - Park, J. H.
AU - Kim, D. H.
AU - Shim, S. Y.
AU - Kim, Y. H.
AU - Lee, J. M.
AU - Hahn, T. S.
AU - Hettinger, Jeffrey
AU - Steel, D. G.
AU - Gray, K. E.
AU - Glagola, B.
AU - Lee, J.
AU - Khim, Z. G.
PY - 1997/8/10
Y1 - 1997/8/10
N2 - We have studied the effect of heavy-ion irradiation on the transport properties of YBa 2 Cu 3 O x thin films. Columnar defects parallel to the c axis (0°) and crossed columnar defects with various inclination angles (θ= ± 10°, ± 20°, and ± 40°) were introduced into films by 1.3 GeV U-ion irradiation with dose equivalent to 1 T vortex density. Transport properties including irreversibility fields, activation energies, and critical current densities have been measured in magnetic fields applied parallel to the c axis. The best transport properties were observed in samples of θ = ± 10° in most of the H-T plane we studied, consistent with the splay model. However, the relative enhancement of the critical current density in the θ= ± 10° compared to the 0° sample was not as large as in the case of a single crystal suggesting that in films the point defects also play an important part in flux pinning.
AB - We have studied the effect of heavy-ion irradiation on the transport properties of YBa 2 Cu 3 O x thin films. Columnar defects parallel to the c axis (0°) and crossed columnar defects with various inclination angles (θ= ± 10°, ± 20°, and ± 40°) were introduced into films by 1.3 GeV U-ion irradiation with dose equivalent to 1 T vortex density. Transport properties including irreversibility fields, activation energies, and critical current densities have been measured in magnetic fields applied parallel to the c axis. The best transport properties were observed in samples of θ = ± 10° in most of the H-T plane we studied, consistent with the splay model. However, the relative enhancement of the critical current density in the θ= ± 10° compared to the 0° sample was not as large as in the case of a single crystal suggesting that in films the point defects also play an important part in flux pinning.
UR - http://www.scopus.com/inward/record.url?scp=0000700753&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000700753&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(97)01482-2
DO - 10.1016/S0921-4534(97)01482-2
M3 - Article
AN - SCOPUS:0000700753
VL - 281
SP - 310
EP - 316
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 4
ER -