Hysteresis of the transport critical current of (Tl,Pb) -(Sr,Ba) -Ca-Cu-O and Bi-Sr-Ca-Cu-O conductors: Effects of temperature and magnetic field

F. A. List; D. M. Kroeger; V. Selvamanickam

doi:10.1016/S0921-4534(96)00714-9

Hysteresis of the transport critical current of (Tl,Pb) -(Sr,Ba) -Ca-Cu-O and Bi-Sr-Ca-Cu-O conductors: Effects of temperature and magnetic field

F. A. List, D. M. Kroeger, V. Selvamanickam

Deposition Science and Technology

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

10 Scopus citations

Abstract

The transport critical current (I_c) of polycrystalline (Tl_0.5Pb_0.5)(Sr_0.8Ba_0.2) ₂Ca₂Cu₃O_x (Tl1223) and Bi₂Sr₂CaCu₂O_x (Bi2212) conductors has been determined for a range of temperature (25-77.3 K) and a range of externally applied magnetic field (H_app = 0-1.5 T). Hysteresis of the I_c versus H_app behavior has been observed for the Tl1223 conductor and has been interpreted using Bean's critical state model [1]. For the Tl1223 conductor, the remnant critical current measured for H_app = 0 after exposure to 1.5 T was found to be independent of temperature. This behavior has been shown to be consistent with the critical state model. No hysteresis of I_c versus H_app was detectable for the Bi2212 conductor.

Original language	English
Pages (from-to)	220-230
Number of pages	11
Journal	Physica C: Superconductivity and its Applications
Volume	275
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(96)00714-9
State	Published - Feb 20 1997

Funding

We thank C. Trautwein and M.S. Walker for the preparation of the Bi2212 conductors and gratefully acknowledge D.F. Lee and D.K. Christen for valuable discussions. This research was sponsored by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Utility Technology-Superconductivity Program and prepared by Oak Ridge National Laboratory, managed by Lockheed Martin Energy Research Corp. for the US Department of Energy under contract number DE-AC05-96OR22464.

Funders	Funder number
Lockheed Martin Energy Research Corp.	DE-AC05-96OR22464
Office of Utility Technology-Superconductivity Program
US Department of Energy
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory

Keywords

Critical current density
Grain boundaries
Granular superconductivity
Penetration depth

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10.1016/S0921-4534(96)00714-9

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title = "Hysteresis of the transport critical current of (Tl,Pb) -(Sr,Ba) -Ca-Cu-O and Bi-Sr-Ca-Cu-O conductors: Effects of temperature and magnetic field",

abstract = "The transport critical current (Ic) of polycrystalline (Tl0.5Pb0.5)(Sr0.8Ba0.2) 2Ca2Cu3Ox (Tl1223) and Bi2Sr2CaCu2Ox (Bi2212) conductors has been determined for a range of temperature (25-77.3 K) and a range of externally applied magnetic field (Happ = 0-1.5 T). Hysteresis of the Ic versus Happ behavior has been observed for the Tl1223 conductor and has been interpreted using Bean's critical state model [1]. For the Tl1223 conductor, the remnant critical current measured for Happ = 0 after exposure to 1.5 T was found to be independent of temperature. This behavior has been shown to be consistent with the critical state model. No hysteresis of Ic versus Happ was detectable for the Bi2212 conductor.",

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T2 - Effects of temperature and magnetic field

AU - List, F. A.

AU - Kroeger, D. M.

AU - Selvamanickam, V.

PY - 1997/2/20

Y1 - 1997/2/20

N2 - The transport critical current (Ic) of polycrystalline (Tl0.5Pb0.5)(Sr0.8Ba0.2) 2Ca2Cu3Ox (Tl1223) and Bi2Sr2CaCu2Ox (Bi2212) conductors has been determined for a range of temperature (25-77.3 K) and a range of externally applied magnetic field (Happ = 0-1.5 T). Hysteresis of the Ic versus Happ behavior has been observed for the Tl1223 conductor and has been interpreted using Bean's critical state model [1]. For the Tl1223 conductor, the remnant critical current measured for Happ = 0 after exposure to 1.5 T was found to be independent of temperature. This behavior has been shown to be consistent with the critical state model. No hysteresis of Ic versus Happ was detectable for the Bi2212 conductor.

AB - The transport critical current (Ic) of polycrystalline (Tl0.5Pb0.5)(Sr0.8Ba0.2) 2Ca2Cu3Ox (Tl1223) and Bi2Sr2CaCu2Ox (Bi2212) conductors has been determined for a range of temperature (25-77.3 K) and a range of externally applied magnetic field (Happ = 0-1.5 T). Hysteresis of the Ic versus Happ behavior has been observed for the Tl1223 conductor and has been interpreted using Bean's critical state model [1]. For the Tl1223 conductor, the remnant critical current measured for Happ = 0 after exposure to 1.5 T was found to be independent of temperature. This behavior has been shown to be consistent with the critical state model. No hysteresis of Ic versus Happ was detectable for the Bi2212 conductor.

KW - Critical current density

KW - Grain boundaries

KW - Granular superconductivity

KW - Penetration depth

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Hysteresis of the transport critical current of (Tl,Pb) -(Sr,Ba) -Ca-Cu-O and Bi-Sr-Ca-Cu-O conductors: Effects of temperature and magnetic field

Abstract

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Keywords

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