Enhanced transport properties in YBa2Cu3Ox films with crossed columnar defects of various inclination angles

J. H. Park; D. H. Kim; S. Y. Shim; Y. H. Kim; J. M. Lee; T. S. Hahn; J. D. Hettinger; D. G. Steel; K. E. Gray; B. Glagola; J. Lee; Z. G. Khim

doi:10.1016/S0921-4534(97)01482-2

Enhanced transport properties in YBa₂Cu₃O_x films with crossed columnar defects of various inclination angles

J. H. Park, D. H. Kim, S. Y. Shim, Y. H. Kim, J. M. Lee, T. S. Hahn, J. D. Hettinger, D. G. Steel, K. E. Gray, B. Glagola, J. Lee, Z. G. Khim

Physics

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Abstract

We have studied the effect of heavy-ion irradiation on the transport properties of YBa₂Cu₃O_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	https://doi.org/10.1016/S0921-4534(97)01482-2
State	Published - Aug 10 1997

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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10.1016/S0921-4534(97)01482-2

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Park, J. H., Kim, D. H., Shim, S. Y., Kim, Y. H., Lee, J. M., Hahn, T. S., Hettinger, J. D., Steel, D. G., Gray, K. E., Glagola, B., Lee, J., & Khim, Z. G. (1997). Enhanced transport properties in YBa₂Cu₃O_x films with crossed columnar defects of various inclination angles. Physica C: Superconductivity and its applications, 281(4), 310-316. https://doi.org/10.1016/S0921-4534(97)01482-2

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title = "Enhanced transport properties in YBa2Cu3Ox films with crossed columnar defects of various inclination angles",

abstract = "We have studied the effect of heavy-ion irradiation on the transport properties of YBa2Cu3Ox 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.",

author = "Park, {J. H.} and Kim, {D. H.} and Shim, {S. Y.} and Kim, {Y. H.} and Lee, {J. M.} and Hahn, {T. S.} and Hettinger, {J. D.} and Steel, {D. G.} and Gray, {K. E.} and B. Glagola and J. Lee and Khim, {Z. G.}",

note = "Funding Information: This work in Korea was supportedin part by MOST, Korea ResearchF oundationu nderC ontract No. 01D0648,M OE underC ontractN o. BSRI-96-2437, and work in USA was supportedb y DOE under ContractN o. W-31-109-ENG-38a nd NSF-STC underC ontracNt o. DMR 91-20000.",

year = "1997",

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doi = "10.1016/S0921-4534(97)01482-2",

language = "English (US)",

volume = "281",

pages = "310--316",

journal = "Physica C: Superconductivity and its applications",

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T1 - Enhanced transport properties in YBa2Cu3Ox 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, J. D.

AU - Steel, D. G.

AU - Gray, K. E.

AU - Glagola, B.

AU - Lee, J.

AU - Khim, Z. G.

N1 - Funding Information: This work in Korea was supportedin part by MOST, Korea ResearchF oundationu nderC ontract No. 01D0648,M OE underC ontractN o. BSRI-96-2437, and work in USA was supportedb y DOE under ContractN o. W-31-109-ENG-38a nd NSF-STC underC ontracNt o. DMR 91-20000.

PY - 1997/8/10

Y1 - 1997/8/10

N2 - We have studied the effect of heavy-ion irradiation on the transport properties of YBa2Cu3Ox 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 YBa2Cu3Ox 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.

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Enhanced transport properties in YBa₂Cu₃O_x films with crossed columnar defects of various inclination angles

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