Magnetization and critical currents of Bi-Sr-Ca-Cu-O and Ba 2YCu3O7 superconductors

E. M. Gyorgy; R. B. Van Dover; S. Jin; R. C. Sherwood; L. F. Schneemeyer; T. H. Tiefel; J. V. Waszczak

doi:10.1063/1.100508

Magnetization and critical currents of Bi-Sr-Ca-Cu-O and Ba ₂YCu₃O₇ superconductors

E. M. Gyorgy, R. B. Van Dover, S. Jin, R. C. Sherwood, L. F. Schneemeyer, T. H. Tiefel, J. V. Waszczak

Chemistry and Biochemistry

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Abstract

We have measured the critical currrent density J_c as a function of temperature for a Bi-Sr-Ca-Cu-O sample containing a substantial fraction of a phase with T_c≊110 K and for a Ba₂YCu ₃O₇ sample (TT_c≊92 K). The behavior of J_c was deduced from magnetization measurements. For both samples the magnetization at fixed temperature and field decayed logarithmically with time. The values of J_c so derived, allowing for the decay to occur, went to zero for temperatures above 35 K for the Bi-Sr-Ca-Cu-O ceramic and to zero above 70 K for the Ba₂YCu₃O₇ sample. These values are substantially lower than those deduced from dynamic M-H loops.

Original language	English
Pages (from-to)	2223-2225
Number of pages	3
Journal	Applied Physics Letters
Volume	53
Issue number	22
DOIs	https://doi.org/10.1063/1.100508
State	Published - 1988

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title = "Magnetization and critical currents of Bi-Sr-Ca-Cu-O and Ba 2YCu3O7 superconductors",

abstract = "We have measured the critical currrent density Jc as a function of temperature for a Bi-Sr-Ca-Cu-O sample containing a substantial fraction of a phase with Tc≊110 K and for a Ba2YCu 3O7 sample (TTc≊92 K). The behavior of Jc was deduced from magnetization measurements. For both samples the magnetization at fixed temperature and field decayed logarithmically with time. The values of Jc so derived, allowing for the decay to occur, went to zero for temperatures above 35 K for the Bi-Sr-Ca-Cu-O ceramic and to zero above 70 K for the Ba2YCu3O7 sample. These values are substantially lower than those deduced from dynamic M-H loops.",

author = "Gyorgy, {E. M.} and {Van Dover}, {R. B.} and S. Jin and Sherwood, {R. C.} and Schneemeyer, {L. F.} and Tiefel, {T. H.} and Waszczak, {J. V.}",

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TY - JOUR

T1 - Magnetization and critical currents of Bi-Sr-Ca-Cu-O and Ba 2YCu3O7 superconductors

AU - Gyorgy, E. M.

AU - Van Dover, R. B.

AU - Jin, S.

AU - Sherwood, R. C.

AU - Schneemeyer, L. F.

AU - Tiefel, T. H.

AU - Waszczak, J. V.

PY - 1988

Y1 - 1988

N2 - We have measured the critical currrent density Jc as a function of temperature for a Bi-Sr-Ca-Cu-O sample containing a substantial fraction of a phase with Tc≊110 K and for a Ba2YCu 3O7 sample (TTc≊92 K). The behavior of Jc was deduced from magnetization measurements. For both samples the magnetization at fixed temperature and field decayed logarithmically with time. The values of Jc so derived, allowing for the decay to occur, went to zero for temperatures above 35 K for the Bi-Sr-Ca-Cu-O ceramic and to zero above 70 K for the Ba2YCu3O7 sample. These values are substantially lower than those deduced from dynamic M-H loops.

AB - We have measured the critical currrent density Jc as a function of temperature for a Bi-Sr-Ca-Cu-O sample containing a substantial fraction of a phase with Tc≊110 K and for a Ba2YCu 3O7 sample (TTc≊92 K). The behavior of Jc was deduced from magnetization measurements. For both samples the magnetization at fixed temperature and field decayed logarithmically with time. The values of Jc so derived, allowing for the decay to occur, went to zero for temperatures above 35 K for the Bi-Sr-Ca-Cu-O ceramic and to zero above 70 K for the Ba2YCu3O7 sample. These values are substantially lower than those deduced from dynamic M-H loops.

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DO - 10.1063/1.100508

M3 - Article

AN - SCOPUS:0001841988

SN - 0003-6951

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

ER -

Magnetization and critical currents of Bi-Sr-Ca-Cu-O and Ba ₂YCu₃O₇ superconductors

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