Identification of grain boundary effects in current-voltage curves of polycrystalline high-Tc superconductors

J. D. Hettinger; K. E. Gray; D. J. Miller; D. H. Kim; D. G. Steel; B. R. Washburn; J. Sharping; C. Moreau; M. Eddy; J. E. Tkaczyk; J. DeLuca; J. H. Kang; J. Talvacchio

doi:10.1016/S0921-4534(96)00648-X

Identification of grain boundary effects in current-voltage curves of polycrystalline high-T_c superconductors

J. D. Hettinger, K. E. Gray, D. J. Miller, D. H. Kim, D. G. Steel, B. R. Washburn, J. Sharping, C. Moreau, M. Eddy, J. E. Tkaczyk, J. DeLuca, J. H. Kang, J. Talvacchio

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9 Scopus citations

Abstract

Dissipation and critical current densities in high-T_c superconductors can depend on both intragranular flux creep and intergranular weak links. Separating these effects in polycrystals can be a formidable task. We present current-voltage data which can in some cases identify weak-link behavior, and verify it by using ion irradiation to greatly diminish the contribution from flux creep. We conclude that the occurrence of significant weak links in series with so-called strongly-coupled current paths may be more common than previously deduced.

Original language	English (US)
Pages (from-to)	275-280
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	273
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(96)00648-X
State	Published - Jan 1 1997
Externally published	Yes

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(96)00648-X

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Hettinger, J. D., Gray, K. E., Miller, D. J., Kim, D. H., Steel, D. G., Washburn, B. R., Sharping, J., Moreau, C., Eddy, M., Tkaczyk, J. E., DeLuca, J., Kang, J. H., & Talvacchio, J. (1997). Identification of grain boundary effects in current-voltage curves of polycrystalline high-T_c superconductors. Physica C: Superconductivity and its applications, 273(3-4), 275-280. https://doi.org/10.1016/S0921-4534(96)00648-X

@article{c81bc1ccaf364e2392b2791304b05066,

title = "Identification of grain boundary effects in current-voltage curves of polycrystalline high-Tc superconductors",

abstract = "Dissipation and critical current densities in high-Tc superconductors can depend on both intragranular flux creep and intergranular weak links. Separating these effects in polycrystals can be a formidable task. We present current-voltage data which can in some cases identify weak-link behavior, and verify it by using ion irradiation to greatly diminish the contribution from flux creep. We conclude that the occurrence of significant weak links in series with so-called strongly-coupled current paths may be more common than previously deduced.",

author = "Hettinger, {J. D.} and Gray, {K. E.} and Miller, {D. J.} and Kim, {D. H.} and Steel, {D. G.} and Washburn, {B. R.} and J. Sharping and C. Moreau and M. Eddy and Tkaczyk, {J. E.} and J. DeLuca and Kang, {J. H.} and J. Talvacchio",

note = "Funding Information: The authors acknowledge useful discussions with Alex Gurevich and Dave Christen. This research is supported by the U.S. Department of Energy, Basic Energy Sciences-Materials Sciences, and Energy Efficiency and Renewable Energy, as part of a program to develop electric power technology, under contract #W-31-109-ENG-38, and the National Science Foundation-Office of Science and Technology Centers under contract DMR 91-20000. BRW, JS and CM were supported by the Division of Educational Programs.",

year = "1997",

month = jan,

day = "1",

doi = "10.1016/S0921-4534(96)00648-X",

language = "English (US)",

volume = "273",

pages = "275--280",

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

issn = "0921-4534",

publisher = "Elsevier",

number = "3-4",

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Hettinger, JD, Gray, KE, Miller, DJ, Kim, DH, Steel, DG, Washburn, BR, Sharping, J, Moreau, C, Eddy, M, Tkaczyk, JE, DeLuca, J, Kang, JH & Talvacchio, J 1997, 'Identification of grain boundary effects in current-voltage curves of polycrystalline high-T_c superconductors', Physica C: Superconductivity and its applications, vol. 273, no. 3-4, pp. 275-280. https://doi.org/10.1016/S0921-4534(96)00648-X

TY - JOUR

T1 - Identification of grain boundary effects in current-voltage curves of polycrystalline high-Tc superconductors

AU - Hettinger, J. D.

AU - Gray, K. E.

AU - Miller, D. J.

AU - Kim, D. H.

AU - Steel, D. G.

AU - Washburn, B. R.

AU - Sharping, J.

AU - Moreau, C.

AU - Eddy, M.

AU - Tkaczyk, J. E.

AU - DeLuca, J.

AU - Kang, J. H.

AU - Talvacchio, J.

N1 - Funding Information: The authors acknowledge useful discussions with Alex Gurevich and Dave Christen. This research is supported by the U.S. Department of Energy, Basic Energy Sciences-Materials Sciences, and Energy Efficiency and Renewable Energy, as part of a program to develop electric power technology, under contract #W-31-109-ENG-38, and the National Science Foundation-Office of Science and Technology Centers under contract DMR 91-20000. BRW, JS and CM were supported by the Division of Educational Programs.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Dissipation and critical current densities in high-Tc superconductors can depend on both intragranular flux creep and intergranular weak links. Separating these effects in polycrystals can be a formidable task. We present current-voltage data which can in some cases identify weak-link behavior, and verify it by using ion irradiation to greatly diminish the contribution from flux creep. We conclude that the occurrence of significant weak links in series with so-called strongly-coupled current paths may be more common than previously deduced.

AB - Dissipation and critical current densities in high-Tc superconductors can depend on both intragranular flux creep and intergranular weak links. Separating these effects in polycrystals can be a formidable task. We present current-voltage data which can in some cases identify weak-link behavior, and verify it by using ion irradiation to greatly diminish the contribution from flux creep. We conclude that the occurrence of significant weak links in series with so-called strongly-coupled current paths may be more common than previously deduced.

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U2 - 10.1016/S0921-4534(96)00648-X

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SP - 275

EP - 280

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 3-4

ER -

Identification of grain boundary effects in current-voltage curves of polycrystalline high-T_c superconductors

Abstract

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