Irradiation effects of flux pinning and Jc in high temperature superconductors

P. H. Hor; J. Bechtold; Y. Y. Xue; C. W. Chu; E. V. Hungerford; X. K. Maruyama; H. Backe; F. R. Buskirk; S. M. Connors; Y. C. Jean; J. W. Farmer

doi:10.1016/0921-4534(91)91280-H

Irradiation effects of flux pinning and J_c in high temperature superconductors

P. H. Hor, J. Bechtold, Y. Y. Xue, C. W. Chu, E. V. Hungerford, X. K. Maruyama, H. Backe, F. R. Buskirk, S. M. Connors, Y. C. Jean, J. W. Farmer

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Abstract

We have introduced neutron and electron irradiation defects in bulk YBCO melt-textured materials. The defects and their effect on the critical current density (J_c) have been examined. The enhancement of J_c is found to be heavily dependent on the type and energy of the beam as well as on the direction of the beam with respect to the crystal. Two types of defects have been identified in neutron irradiated YBCO by positron annihilation experiments. The large defects (∼ 20 Å) correlate with the enhancement of J_c and are 10³ times more effective in flux pinning than point defects.

Original language	English
Pages (from-to)	2311-2312
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	185-189
Issue number	PART 4
DOIs	https://doi.org/10.1016/0921-4534(91)91280-H
Publication status	Published - 1991 Dec 1

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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10.1016/0921-4534(91)91280-H

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title = "Irradiation effects of flux pinning and Jc in high temperature superconductors",

abstract = "We have introduced neutron and electron irradiation defects in bulk YBCO melt-textured materials. The defects and their effect on the critical current density (Jc) have been examined. The enhancement of Jc is found to be heavily dependent on the type and energy of the beam as well as on the direction of the beam with respect to the crystal. Two types of defects have been identified in neutron irradiated YBCO by positron annihilation experiments. The large defects (∼ 20 {\AA}) correlate with the enhancement of Jc and are 103 times more effective in flux pinning than point defects.",

author = "Hor, {P. H.} and J. Bechtold and Xue, {Y. Y.} and Chu, {C. W.} and Hungerford, {E. V.} and Maruyama, {X. K.} and H. Backe and Buskirk, {F. R.} and Connors, {S. M.} and Jean, {Y. C.} and Farmer, {J. W.}",

note = "Funding Information: The importance of large defects ~e o,~,, enhancement can a~se be seen in fi~e anisotropic enhancement of Jc ia 100 This work is supported in part by the NSF Low Temperature Physics Program Gran~ No. DMR 86-126539, DARPA Grant No. MDA 972-88-G-002, NASA Gra~ No. NAGW-~7I~ Texas Center for Superconductivity at the University of Houston, and the T. L. L. Tempk Foundation,",

year = "1991",

month = dec,

day = "1",

doi = "10.1016/0921-4534(91)91280-H",

language = "English",

volume = "185-189",

pages = "2311--2312",

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

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publisher = "Elsevier",

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TY - JOUR

T1 - Irradiation effects of flux pinning and Jc in high temperature superconductors

AU - Hor, P. H.

AU - Bechtold, J.

AU - Xue, Y. Y.

AU - Chu, C. W.

AU - Hungerford, E. V.

AU - Maruyama, X. K.

AU - Backe, H.

AU - Buskirk, F. R.

AU - Connors, S. M.

AU - Jean, Y. C.

AU - Farmer, J. W.

N1 - Funding Information: The importance of large defects ~e o,~,, enhancement can a~se be seen in fi~e anisotropic enhancement of Jc ia 100 This work is supported in part by the NSF Low Temperature Physics Program Gran~ No. DMR 86-126539, DARPA Grant No. MDA 972-88-G-002, NASA Gra~ No. NAGW-~7I~ Texas Center for Superconductivity at the University of Houston, and the T. L. L. Tempk Foundation,

PY - 1991/12/1

Y1 - 1991/12/1

N2 - We have introduced neutron and electron irradiation defects in bulk YBCO melt-textured materials. The defects and their effect on the critical current density (Jc) have been examined. The enhancement of Jc is found to be heavily dependent on the type and energy of the beam as well as on the direction of the beam with respect to the crystal. Two types of defects have been identified in neutron irradiated YBCO by positron annihilation experiments. The large defects (∼ 20 Å) correlate with the enhancement of Jc and are 103 times more effective in flux pinning than point defects.

AB - We have introduced neutron and electron irradiation defects in bulk YBCO melt-textured materials. The defects and their effect on the critical current density (Jc) have been examined. The enhancement of Jc is found to be heavily dependent on the type and energy of the beam as well as on the direction of the beam with respect to the crystal. Two types of defects have been identified in neutron irradiated YBCO by positron annihilation experiments. The large defects (∼ 20 Å) correlate with the enhancement of Jc and are 103 times more effective in flux pinning than point defects.

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U2 - 10.1016/0921-4534(91)91280-H

DO - 10.1016/0921-4534(91)91280-H

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SN - 0921-4534

VL - 185-189

SP - 2311

EP - 2312

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - PART 4

ER -

Irradiation effects of flux pinning and J_c in high temperature superconductors

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