Comparison of Temperature and Field Dependencies of the Critical Current Densities of Bulk YBCO, MgB 2 , and Iron-Based Superconductors

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Abstract

We compare the temperature and field dependence of the critical current densities of high-T c superconductor materials intended for various bulk applications such as trapped-field magnets. This comprises bulk samples of YBa 2 Cu 3 O x (YBCO), MgB 2 , and iron-based materials, including also various versions of the YBCO compound such as melt-textured ones, infiltration-growth processed ones, and YBCO foams. Critical current densities and flux pinning forces were obtained from magnetization loops measured using Quantum Design SQUID and physical property measurement system (PPMS) systems with applied magnetic fields of up to ±9 T. The obtained data are compared to each other with respect of the optimal cooling temperature possible using modern cryocoolers. Furthermore, we plot the temperature dependencies of the critical current densities versus the normalized temperature t=T/T c . This enables a direct judgement of the performance of the material in the trapped-field applications.

Original languageEnglish
Article number8649756
JournalIEEE Transactions on Applied Superconductivity
Volume29
Issue number5
DOIs
Publication statusPublished - 2019 Aug 1

Fingerprint

critical current
Critical current density (superconductivity)
current density
iron
flux pinning
infiltration
Flux pinning
foams
Temperature
temperature
SQUIDs
temperature distribution
magnets
physical properties
plots
Infiltration
Superconducting materials
Magnets
Foams
cooling

Keywords

  • critical currents
  • iron-based superconductors
  • MgB
  • temperature dependence
  • YBCO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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title = "Comparison of Temperature and Field Dependencies of the Critical Current Densities of Bulk YBCO, MgB 2 , and Iron-Based Superconductors",
abstract = "We compare the temperature and field dependence of the critical current densities of high-T c superconductor materials intended for various bulk applications such as trapped-field magnets. This comprises bulk samples of YBa 2 Cu 3 O x (YBCO), MgB 2 , and iron-based materials, including also various versions of the YBCO compound such as melt-textured ones, infiltration-growth processed ones, and YBCO foams. Critical current densities and flux pinning forces were obtained from magnetization loops measured using Quantum Design SQUID and physical property measurement system (PPMS) systems with applied magnetic fields of up to ±9 T. The obtained data are compared to each other with respect of the optimal cooling temperature possible using modern cryocoolers. Furthermore, we plot the temperature dependencies of the critical current densities versus the normalized temperature t=T/T c . This enables a direct judgement of the performance of the material in the trapped-field applications.",
keywords = "critical currents, iron-based superconductors, MgB, temperature dependence, YBCO",
author = "Koblischka-Veneva, {Anjela Dimitrova} and Koblischka, {Michael Rudolf} and Kevin Berger and Quentin Nouailhetas and Bruno Douine and Muralidhar Miryala and Masato Murakami",
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AU - Koblischka-Veneva, Anjela Dimitrova

AU - Koblischka, Michael Rudolf

AU - Berger, Kevin

AU - Nouailhetas, Quentin

AU - Douine, Bruno

AU - Miryala, Muralidhar

AU - Murakami, Masato

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N2 - We compare the temperature and field dependence of the critical current densities of high-T c superconductor materials intended for various bulk applications such as trapped-field magnets. This comprises bulk samples of YBa 2 Cu 3 O x (YBCO), MgB 2 , and iron-based materials, including also various versions of the YBCO compound such as melt-textured ones, infiltration-growth processed ones, and YBCO foams. Critical current densities and flux pinning forces were obtained from magnetization loops measured using Quantum Design SQUID and physical property measurement system (PPMS) systems with applied magnetic fields of up to ±9 T. The obtained data are compared to each other with respect of the optimal cooling temperature possible using modern cryocoolers. Furthermore, we plot the temperature dependencies of the critical current densities versus the normalized temperature t=T/T c . This enables a direct judgement of the performance of the material in the trapped-field applications.

AB - We compare the temperature and field dependence of the critical current densities of high-T c superconductor materials intended for various bulk applications such as trapped-field magnets. This comprises bulk samples of YBa 2 Cu 3 O x (YBCO), MgB 2 , and iron-based materials, including also various versions of the YBCO compound such as melt-textured ones, infiltration-growth processed ones, and YBCO foams. Critical current densities and flux pinning forces were obtained from magnetization loops measured using Quantum Design SQUID and physical property measurement system (PPMS) systems with applied magnetic fields of up to ±9 T. The obtained data are compared to each other with respect of the optimal cooling temperature possible using modern cryocoolers. Furthermore, we plot the temperature dependencies of the critical current densities versus the normalized temperature t=T/T c . This enables a direct judgement of the performance of the material in the trapped-field applications.

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