Bending stress- and magnetic field-dependence of Ic in JFCA-RRT samples

K. Noto; Y. Fujine; T. Sato; S. Shirato; Y. Nagasawa; T. Kikegawa; K. Watanabe; Y. Kimura; T. Kaneko; A. Kimura

doi:10.1016/S0921-4534(02)01188-7

Bending stress- and magnetic field-dependence of I_c in JFCA-RRT samples

K. Noto, Y. Fujine, T. Sato, S. Shirato, Y. Nagasawa, T. Kikegawa, K. Watanabe, Y. Kimura, T. Kaneko, A. Kimura

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

1 Citation (Scopus)

Abstract

Japan Fine Ceramics Association has carried out a round robin test (RRT) on the bending strain (_b) dependence of the critical current I_c at 77 K in three kinds of Bi(2223)/Ag tape samples (VAM-1, JFC-1, JFC-2; three samples each) for future standardization. We measured I_c(_b) (_b: 0-1.0%) as one of RRT participants and also measured the magnetic field dependence of I_c under several bending strains mentioned above as optional measurements. As results, we found a very fast decrease of I_c in low fields up to 0.5 T and then a gradual decrease up to 1.5-2.0 T. I_c maintains 0.9-0.95 of its initial value up to _b=0.4% strain and then decreases a little faster down to 0.60-0.65 at _b=1.0% for almost all samples and magnetic fields. The normalized pinning force F_p/F_pmax shows scaling according to the expression F_p/F_pmax∝(B/B_irr)(1-(B/B_irr)) ³ for all samples and bending strains, where B_irr is the irreversibility field.

Original language	English
Pages (from-to)	12-15
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	382
Issue number	1
DOIs	https://doi.org/10.1016/S0921-4534(02)01188-7
Publication status	Published - 2002 Oct 15
Externally published	Yes

Keywords

Bending strain
Bi-2223/Ag tape
Critical current
Round robin test
Scaling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(02)01188-7

Cite this

@article{2f41283659e2401fae8ba3642169fe5a,

title = "Bending stress- and magnetic field-dependence of Ic in JFCA-RRT samples",

abstract = "Japan Fine Ceramics Association has carried out a round robin test (RRT) on the bending strain (b) dependence of the critical current Ic at 77 K in three kinds of Bi(2223)/Ag tape samples (VAM-1, JFC-1, JFC-2; three samples each) for future standardization. We measured Ic(b) (b: 0-1.0%) as one of RRT participants and also measured the magnetic field dependence of Ic under several bending strains mentioned above as optional measurements. As results, we found a very fast decrease of Ic in low fields up to 0.5 T and then a gradual decrease up to 1.5-2.0 T. Ic maintains 0.9-0.95 of its initial value up to b=0.4% strain and then decreases a little faster down to 0.60-0.65 at b=1.0% for almost all samples and magnetic fields. The normalized pinning force Fp/Fpmax shows scaling according to the expression Fp/Fpmax∝(B/Birr)(1-(B/Birr)) 3 for all samples and bending strains, where Birr is the irreversibility field.",

keywords = "Bending strain, Bi-2223/Ag tape, Critical current, Round robin test, Scaling",

author = "K. Noto and Y. Fujine and T. Sato and S. Shirato and Y. Nagasawa and T. Kikegawa and K. Watanabe and Y. Kimura and T. Kaneko and A. Kimura",

note = "Funding Information: The authors would like to thank Mr. S. Fujinuma of Iwate University for technical assistance. This manuscript was prepared by Miss S. Sakai. This work was partly supported by US–Japan Collaborative R&D Program of Japan Society for the Promotion of Science.",

year = "2002",

month = oct,

day = "15",

doi = "10.1016/S0921-4534(02)01188-7",

language = "English",

volume = "382",

pages = "12--15",

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

issn = "0921-4534",

publisher = "Elsevier",

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TY - JOUR

T1 - Bending stress- and magnetic field-dependence of Ic in JFCA-RRT samples

AU - Noto, K.

AU - Fujine, Y.

AU - Sato, T.

AU - Shirato, S.

AU - Nagasawa, Y.

AU - Kikegawa, T.

AU - Watanabe, K.

AU - Kimura, Y.

AU - Kaneko, T.

AU - Kimura, A.

N1 - Funding Information: The authors would like to thank Mr. S. Fujinuma of Iwate University for technical assistance. This manuscript was prepared by Miss S. Sakai. This work was partly supported by US–Japan Collaborative R&D Program of Japan Society for the Promotion of Science.

PY - 2002/10/15

Y1 - 2002/10/15

N2 - Japan Fine Ceramics Association has carried out a round robin test (RRT) on the bending strain (b) dependence of the critical current Ic at 77 K in three kinds of Bi(2223)/Ag tape samples (VAM-1, JFC-1, JFC-2; three samples each) for future standardization. We measured Ic(b) (b: 0-1.0%) as one of RRT participants and also measured the magnetic field dependence of Ic under several bending strains mentioned above as optional measurements. As results, we found a very fast decrease of Ic in low fields up to 0.5 T and then a gradual decrease up to 1.5-2.0 T. Ic maintains 0.9-0.95 of its initial value up to b=0.4% strain and then decreases a little faster down to 0.60-0.65 at b=1.0% for almost all samples and magnetic fields. The normalized pinning force Fp/Fpmax shows scaling according to the expression Fp/Fpmax∝(B/Birr)(1-(B/Birr)) 3 for all samples and bending strains, where Birr is the irreversibility field.

AB - Japan Fine Ceramics Association has carried out a round robin test (RRT) on the bending strain (b) dependence of the critical current Ic at 77 K in three kinds of Bi(2223)/Ag tape samples (VAM-1, JFC-1, JFC-2; three samples each) for future standardization. We measured Ic(b) (b: 0-1.0%) as one of RRT participants and also measured the magnetic field dependence of Ic under several bending strains mentioned above as optional measurements. As results, we found a very fast decrease of Ic in low fields up to 0.5 T and then a gradual decrease up to 1.5-2.0 T. Ic maintains 0.9-0.95 of its initial value up to b=0.4% strain and then decreases a little faster down to 0.60-0.65 at b=1.0% for almost all samples and magnetic fields. The normalized pinning force Fp/Fpmax shows scaling according to the expression Fp/Fpmax∝(B/Birr)(1-(B/Birr)) 3 for all samples and bending strains, where Birr is the irreversibility field.

KW - Bending strain

KW - Bi-2223/Ag tape

KW - Critical current

KW - Round robin test

KW - Scaling

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