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Enhanced flux pinning in lithium doped melted grown YBCO by low fluency neutron irradiation

Enhanced flux pinning in lithium doped melted grown YBCO by low fluency neutron irradiation
Enhanced flux pinning in lithium doped melted grown YBCO by low fluency neutron irradiation
A substantial increase in flux pinning has been reported in Li doped YBCO grains following thermal neutron irradiation. This effect observed in sintered YBCO was attributed to the increased number of defects in the crystal lattice produced by the particles emitted from the fission of 6Li. In this study we report preliminary measurements on the effect of irradiating Li doped melt grown YBCO with thermal neutrons. A single grain was divided into two samples, one of which was then irradiated with ? 1017 neutrons. VSM measurements have revealed that the irradiated sample is far superior at low fields (at best a factor of five increase in Jc at 77 K), but at high fields the magnetic moments become very similar and the irreversibility field remains the same. The absence of fishtail irradiation suggests the introduction of an additional low field pinning mechanism.
flux pinning, lithium doped, melt grown, neutron irradiation
0921-5107
182-184
Manton, S.J.
648bd130-6235-4fcc-9f65-52700b8caea6
Beduz, C.
15245681-77b5-4b29-a8fc-23296f13bc57
Yang, Y.
0c661323-7e23-41c6-a9a2-b4479fd74ef1
Deligianis, K.
f8c4cfdf-4f22-4779-8281-c38a3456c7bd
DeGroot, P.A.J.
a02410ea-d97f-431e-b75b-1f535fafb644
Manton, S.J.
648bd130-6235-4fcc-9f65-52700b8caea6
Beduz, C.
15245681-77b5-4b29-a8fc-23296f13bc57
Yang, Y.
0c661323-7e23-41c6-a9a2-b4479fd74ef1
Deligianis, K.
f8c4cfdf-4f22-4779-8281-c38a3456c7bd
DeGroot, P.A.J.
a02410ea-d97f-431e-b75b-1f535fafb644

Manton, S.J., Beduz, C., Yang, Y., Deligianis, K. and DeGroot, P.A.J. (1998) Enhanced flux pinning in lithium doped melted grown YBCO by low fluency neutron irradiation. Materials Science and Engineering: B, 53 (1-2), 182-184. (doi:10.1016/S0921-5107(97)00334-6).

Record type: Article

Abstract

A substantial increase in flux pinning has been reported in Li doped YBCO grains following thermal neutron irradiation. This effect observed in sintered YBCO was attributed to the increased number of defects in the crystal lattice produced by the particles emitted from the fission of 6Li. In this study we report preliminary measurements on the effect of irradiating Li doped melt grown YBCO with thermal neutrons. A single grain was divided into two samples, one of which was then irradiated with ? 1017 neutrons. VSM measurements have revealed that the irradiated sample is far superior at low fields (at best a factor of five increase in Jc at 77 K), but at high fields the magnetic moments become very similar and the irreversibility field remains the same. The absence of fishtail irradiation suggests the introduction of an additional low field pinning mechanism.

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More information

Published date: 1998
Keywords: flux pinning, lithium doped, melt grown, neutron irradiation

Identifiers

Local EPrints ID: 21300
URI: http://eprints.soton.ac.uk/id/eprint/21300
ISSN: 0921-5107
PURE UUID: 5363363c-c5ce-41e3-bf91-1a9c7eccaf5a

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Date deposited: 20 Nov 2006
Last modified: 15 Jul 2019 19:24

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Contributors

Author: S.J. Manton
Author: C. Beduz
Author: Y. Yang
Author: K. Deligianis
Author: P.A.J. DeGroot

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