High Field Properties of Irreversibility Field and Pinning Force for YBa2Cu3O7 Film

S. Awaji; K. Watanabe; N. Kobayashi; H. Yamane; T. Hirai

doi:10.1109/20.511450

High Field Properties of Irreversibility Field and Pinning Force for YBa₂Cu₃O₇ Film

S. Awaji, K. Watanabe, N. Kobayashi, H. Yamane, T. Hirai

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

7 Citations (Scopus)

Abstract

The critical current density and irreversibility field of YBa₂Cu₃O₇ films were resistively measured in fields up to 23T at 5 - 84K when the magnetic field B was applied parallel to the c-axis. The irreversibility field B_i at low temperature, which cannot be measured directly, was estimated using the temperature scaling law of the pinning force density. We found that the B_i values are proportional to (1-(T/T_c)²)^1.4 at high temperature above 40K and then rapidly increase at low temperature below 40K The obtained B_i values at low temperature for B//c are very large, compared with that for other high-T_c superconductors. Moreover, the B, value estimated on the basis of the temperature scaling law of F_p exceeds at least 600T at 5.0K even for B//c.

Original language	English
Pages (from-to)	2776-2779
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	32
Issue number	4 PART 2
DOIs	https://doi.org/10.1109/20.511450
Publication status	Published - 1996

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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@article{7155cc5c1d594892a302c9aa1fad6d3b,

title = "High Field Properties of Irreversibility Field and Pinning Force for YBa2Cu3O7 Film",

abstract = "The critical current density and irreversibility field of YBa2Cu3O7 films were resistively measured in fields up to 23T at 5 - 84K when the magnetic field B was applied parallel to the c-axis. The irreversibility field Bi at low temperature, which cannot be measured directly, was estimated using the temperature scaling law of the pinning force density. We found that the Bi values are proportional to (1-(T/Tc)2)1.4 at high temperature above 40K and then rapidly increase at low temperature below 40K The obtained Bi values at low temperature for B//c are very large, compared with that for other high-Tc superconductors. Moreover, the B, value estimated on the basis of the temperature scaling law of Fp exceeds at least 600T at 5.0K even for B//c.",

author = "S. Awaji and K. Watanabe and N. Kobayashi and H. Yamane and T. Hirai",

note = "Funding Information: This work was partly supported by a Grant-in-Aid Scientific Research from the Ministry of Education, Science and Culture, Japan. Authors would like to thank Professor A. M. Campbell for useful discussion and also appropriate to the staffs of High Field Laboratory for Superconducting Materials, IMR and Cryogenic Center, Tohoku University.",

year = "1996",

doi = "10.1109/20.511450",

language = "English",

volume = "32",

pages = "2776--2779",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "4 PART 2",

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TY - JOUR

T1 - High Field Properties of Irreversibility Field and Pinning Force for YBa2Cu3O7 Film

AU - Awaji, S.

AU - Watanabe, K.

AU - Kobayashi, N.

AU - Yamane, H.

AU - Hirai, T.

N1 - Funding Information: This work was partly supported by a Grant-in-Aid Scientific Research from the Ministry of Education, Science and Culture, Japan. Authors would like to thank Professor A. M. Campbell for useful discussion and also appropriate to the staffs of High Field Laboratory for Superconducting Materials, IMR and Cryogenic Center, Tohoku University.

PY - 1996

Y1 - 1996

N2 - The critical current density and irreversibility field of YBa2Cu3O7 films were resistively measured in fields up to 23T at 5 - 84K when the magnetic field B was applied parallel to the c-axis. The irreversibility field Bi at low temperature, which cannot be measured directly, was estimated using the temperature scaling law of the pinning force density. We found that the Bi values are proportional to (1-(T/Tc)2)1.4 at high temperature above 40K and then rapidly increase at low temperature below 40K The obtained Bi values at low temperature for B//c are very large, compared with that for other high-Tc superconductors. Moreover, the B, value estimated on the basis of the temperature scaling law of Fp exceeds at least 600T at 5.0K even for B//c.

AB - The critical current density and irreversibility field of YBa2Cu3O7 films were resistively measured in fields up to 23T at 5 - 84K when the magnetic field B was applied parallel to the c-axis. The irreversibility field Bi at low temperature, which cannot be measured directly, was estimated using the temperature scaling law of the pinning force density. We found that the Bi values are proportional to (1-(T/Tc)2)1.4 at high temperature above 40K and then rapidly increase at low temperature below 40K The obtained Bi values at low temperature for B//c are very large, compared with that for other high-Tc superconductors. Moreover, the B, value estimated on the basis of the temperature scaling law of Fp exceeds at least 600T at 5.0K even for B//c.

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VL - 32

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 4 PART 2

ER -

High Field Properties of Irreversibility Field and Pinning Force for YBa₂Cu₃O₇ Film

Abstract

ASJC Scopus subject areas

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