Depth-dependent critical-current density of melt-processed Y-Ba-Cu-O discs determined by the third-harmonic technique: Surface barrier and intrinsic pinning

D. X. Chen; T. F. He; M. J. Zhang; S. S. Wang; Y. H. Shi; D. A. Cardwell

doi:10.1016/j.physc.2016.05.002

Depth-dependent critical-current density of melt-processed Y-Ba-Cu-O discs determined by the third-harmonic technique: Surface barrier and intrinsic pinning

D. X. Chen, T. F. He, M. J. Zhang, S. S. Wang, Y. H. Shi, D. A. Cardwell

Research output: Contribution to journal › Article › Research › peer-review

1 Citation (Scopus)

Abstract

© 2016 Elsevier B.V. All rights reserved. The critical-current density Jc of three Y-Ba-Cu-O (YBCO) discs, each cut from the upper section of a melt-processed single grain, has been determined as a function of the depth from the top (seeded) and bottom surfaces of the sample by a modified version of the inductive third-harmonic technique proposed originally by Mawatari et al. It is shown that local Jc in the vicinity of the bottom surface of the sample is lower than that in the vicinity of the top surface for thicker discs and there are reduced effect of surface barrier and intrinsic pinning and important surface damage. The technique employed is recommended as a tool for detecting the imperfection within superconducting structure in bulk YBCO.

Original language	English
Pages (from-to)	1-8
Journal	Physica C: Superconductivity and its Applications
Volume	527
DOIs	https://doi.org/10.1016/j.physc.2016.05.002
Publication status	Published - 15 Aug 2016

Keywords

Critical-current density
High-temperature bulk superconductor
Inductive method of third-harmonic voltage
Melt processing
Top seeded melt growth

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title = "Depth-dependent critical-current density of melt-processed Y-Ba-Cu-O discs determined by the third-harmonic technique: Surface barrier and intrinsic pinning",

abstract = "{\textcopyright} 2016 Elsevier B.V. All rights reserved. The critical-current density Jc of three Y-Ba-Cu-O (YBCO) discs, each cut from the upper section of a melt-processed single grain, has been determined as a function of the depth from the top (seeded) and bottom surfaces of the sample by a modified version of the inductive third-harmonic technique proposed originally by Mawatari et al. It is shown that local Jc in the vicinity of the bottom surface of the sample is lower than that in the vicinity of the top surface for thicker discs and there are reduced effect of surface barrier and intrinsic pinning and important surface damage. The technique employed is recommended as a tool for detecting the imperfection within superconducting structure in bulk YBCO.",

keywords = "Critical-current density, High-temperature bulk superconductor, Inductive method of third-harmonic voltage, Melt processing, Top seeded melt growth",

author = "Chen, {D. X.} and He, {T. F.} and Zhang, {M. J.} and Wang, {S. S.} and Shi, {Y. H.} and Cardwell, {D. A.}",

year = "2016",

month = aug,

day = "15",

doi = "10.1016/j.physc.2016.05.002",

language = "English",

volume = "527",

pages = "1--8",

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

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Depth-dependent critical-current density of melt-processed Y-Ba-Cu-O discs determined by the third-harmonic technique: Surface barrier and intrinsic pinning. / Chen, D. X.; He, T. F.; Zhang, M. J.; Wang, S. S.; Shi, Y. H.; Cardwell, D. A.

In: Physica C: Superconductivity and its Applications, Vol. 527, 15.08.2016, p. 1-8.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Depth-dependent critical-current density of melt-processed Y-Ba-Cu-O discs determined by the third-harmonic technique: Surface barrier and intrinsic pinning

AU - Chen, D. X.

AU - He, T. F.

AU - Zhang, M. J.

AU - Wang, S. S.

AU - Shi, Y. H.

AU - Cardwell, D. A.

PY - 2016/8/15

Y1 - 2016/8/15

N2 - © 2016 Elsevier B.V. All rights reserved. The critical-current density Jc of three Y-Ba-Cu-O (YBCO) discs, each cut from the upper section of a melt-processed single grain, has been determined as a function of the depth from the top (seeded) and bottom surfaces of the sample by a modified version of the inductive third-harmonic technique proposed originally by Mawatari et al. It is shown that local Jc in the vicinity of the bottom surface of the sample is lower than that in the vicinity of the top surface for thicker discs and there are reduced effect of surface barrier and intrinsic pinning and important surface damage. The technique employed is recommended as a tool for detecting the imperfection within superconducting structure in bulk YBCO.

AB - © 2016 Elsevier B.V. All rights reserved. The critical-current density Jc of three Y-Ba-Cu-O (YBCO) discs, each cut from the upper section of a melt-processed single grain, has been determined as a function of the depth from the top (seeded) and bottom surfaces of the sample by a modified version of the inductive third-harmonic technique proposed originally by Mawatari et al. It is shown that local Jc in the vicinity of the bottom surface of the sample is lower than that in the vicinity of the top surface for thicker discs and there are reduced effect of surface barrier and intrinsic pinning and important surface damage. The technique employed is recommended as a tool for detecting the imperfection within superconducting structure in bulk YBCO.

KW - Critical-current density

KW - High-temperature bulk superconductor

KW - Inductive method of third-harmonic voltage

KW - Melt processing

KW - Top seeded melt growth

U2 - 10.1016/j.physc.2016.05.002

DO - 10.1016/j.physc.2016.05.002

M3 - Article

VL - 527

SP - 1

EP - 8

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

ER -