Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X

A. H. Hermann; Z. Z. Sheng; W. Kiehl; D. Marsh; A. Elali; Paul D. Hambourger; C. Almasan; J. Estrada; T. Datta

doi:10.1063/1.342459

Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X

A. H. Hermann
, Z. Z. Sheng
, W. Kiehl
, D. Marsh
, A. Elali
, Paul D. Hambourger
, C. Almasan
, J. Estrada
, T. Datta

University of South Carolina - Columbia

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

Abstract

We report magnetic field dependence of the transport critical current and dc magnetic susceptibility measurements on YBa2Cu3O7−x superconductors formed by melt-solid reactions at 950 °C between Ba-Cu-O (or Tb-Ba-Cu-O) and solid nonstoichiometric Y-Ba-Cu-oxide. Four-probe dc critical current measurements at 77, 64, and 4.2 K show strong depression of the critical current density with increasing magnetic field in agreement with a model of weakly linked superconducting regions. Diamagnetic shielding and Meissner flux expulsion measurements in the temperature range 10–300 K show about one third volume fraction of perfect superconductivity. Both shielding and flux expulsion were observed to be approximately temperature independent below 60 K indicating strong coupling between the grains throughout the entire volume below this temperature.

Original language	American English
Journal	Journal of Applied Physics
Volume	64
DOIs	https://doi.org/10.1063/1.342459
State	Published - Nov 15 1988

Disciplines

Physics

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Transport Critical Current and Magnetization Measurements of MeltFinal published version, 0.99 MBLicense: CC BY

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@article{66ea5261b6e24ac5b7480469c110e7c5,

title = "Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X",

abstract = " We report magnetic field dependence of the transport critical current and dc magnetic susceptibility measurements on YBa2Cu3O7−x superconductors formed by melt-solid reactions at 950 °C between Ba-Cu-O (or Tb-Ba-Cu-O) and solid nonstoichiometric Y-Ba-Cu-oxide. Four-probe dc critical current measurements at 77, 64, and 4.2 K show strong depression of the critical current density with increasing magnetic field in agreement with a model of weakly linked superconducting regions. Diamagnetic shielding and Meissner flux expulsion measurements in the temperature range 10–300 K show about one third volume fraction of perfect superconductivity. Both shielding and flux expulsion were observed to be approximately temperature independent below 60 K indicating strong coupling between the grains throughout the entire volume below this temperature.",

author = "Hermann, \{A. H.\} and Sheng, \{Z. Z.\} and W. Kiehl and D. Marsh and A. Elali and Hambourger, \{Paul D.\} and C. Almasan and J. Estrada and T. Datta",

note = "Hermann, A. H. , Z. Z. Sheng, W. Kiehl, D. Marsh, A. Elali, Paul D. Hambourger, C. Almasan, J. Estrada, and T. Datta. {"}Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X.{"} Journal of Applied Physics 64 (1988): 5050-5055.",

year = "1988",

month = nov,

day = "15",

doi = "10.1063/1.342459",

language = "American English",

volume = "64",

journal = "Journal of Applied Physics",

}

TY - JOUR

T1 - Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X

AU - Hermann, A. H.

AU - Sheng, Z. Z.

AU - Kiehl, W.

AU - Marsh, D.

AU - Elali, A.

AU - Hambourger, Paul D.

AU - Almasan, C.

AU - Estrada, J.

AU - Datta, T.

N1 - Hermann, A. H. , Z. Z. Sheng, W. Kiehl, D. Marsh, A. Elali, Paul D. Hambourger, C. Almasan, J. Estrada, and T. Datta. "Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X." Journal of Applied Physics 64 (1988): 5050-5055.

PY - 1988/11/15

Y1 - 1988/11/15

N2 - We report magnetic field dependence of the transport critical current and dc magnetic susceptibility measurements on YBa2Cu3O7−x superconductors formed by melt-solid reactions at 950 °C between Ba-Cu-O (or Tb-Ba-Cu-O) and solid nonstoichiometric Y-Ba-Cu-oxide. Four-probe dc critical current measurements at 77, 64, and 4.2 K show strong depression of the critical current density with increasing magnetic field in agreement with a model of weakly linked superconducting regions. Diamagnetic shielding and Meissner flux expulsion measurements in the temperature range 10–300 K show about one third volume fraction of perfect superconductivity. Both shielding and flux expulsion were observed to be approximately temperature independent below 60 K indicating strong coupling between the grains throughout the entire volume below this temperature.

AB - We report magnetic field dependence of the transport critical current and dc magnetic susceptibility measurements on YBa2Cu3O7−x superconductors formed by melt-solid reactions at 950 °C between Ba-Cu-O (or Tb-Ba-Cu-O) and solid nonstoichiometric Y-Ba-Cu-oxide. Four-probe dc critical current measurements at 77, 64, and 4.2 K show strong depression of the critical current density with increasing magnetic field in agreement with a model of weakly linked superconducting regions. Diamagnetic shielding and Meissner flux expulsion measurements in the temperature range 10–300 K show about one third volume fraction of perfect superconductivity. Both shielding and flux expulsion were observed to be approximately temperature independent below 60 K indicating strong coupling between the grains throughout the entire volume below this temperature.

UR - https://engagedscholarship.csuohio.edu/sciphysics_facpub/94

U2 - 10.1063/1.342459

DO - 10.1063/1.342459

M3 - Article

VL - 64

JO - Journal of Applied Physics

JF - Journal of Applied Physics

ER -

Transport Critical Current and Magnetization Measurements of Melt-Processed YBa2Cu3O7-X

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