Transport critical current density of (Bi<inf>1.6</inf>Pb<inf>0.4</inf>)Sr<inf>2</inf>Ca<inf>2</inf>Cu<inf>3</inf>O<inf>10</inf>/Ag superconductor tapes with addition of nanosized CoFe<inf>2</inf>O<inf>4</inf>

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Abstract

The effect of nanosized CoFe<inf>2</inf>O<inf>4</inf> (60 nm) addition on the transport critical current density, J<inf>c</inf>, of (Bi<inf>1.6</inf>Pb<inf>0.4</inf>)Sr<inf>2</inf>Ca<inf>2</inf>Cu<inf>3</inf>O<inf>10</inf>(CoFe<inf>2</inf>O<inf>4</inf>)<inf>x</inf> (x = 0–0.05 wt%) superconductor prepared by the co-precipitation method was investigated. The optimal J<inf>c</inf> (measured using the four-point probe method) was observed in the x = 0.01 wt% pellets. Using this optimal wt%, Ag-sheathed (Bi<inf>1.6</inf>Pb<inf>0.4</inf>)Sr<inf>2</inf>Ca<inf>2</inf>Cu3O<inf>10</inf>(CoFe<inf>2</inf>O<inf>4</inf>)<inf>0.01</inf> superconductor tapes were fabricated using the powder-in-tube method. The tapes were sintered for 50 and 100 h at 845 °C. The phase and microstructure of the samples were determined using the powder X-ray diffraction method and scanning electron microscopy, respectively. The temperature dependence of J<inf>c</inf> for the tapes in various applied magnetic fields was also measured. J<inf>c</inf> of (Bi<inf>1.6</inf>Pb<inf>0.4</inf>)Sr<inf>2</inf>Ca<inf>2</inf>Cu<inf>3</inf>O<inf>10</inf>(CoFe<inf>2</inf>O<inf>4</inf>)<inf>0.01</inf>/Ag tapes sintered for 100 h was 22,420 A/cm<sup>2</sup> at 30 K. The non-added tapes sintered for 100 h showed a much lower J<inf>c</inf> (8280 A/cm<sup>2</sup> at 30 K). This study showed that addition of CoFe<inf>2</inf>O<inf>4</inf> nanoparticles enhanced the transport critical current density in the (Bi<inf>1.6</inf>Pb<inf>0.4</inf>)Sr<inf>2</inf>Ca<inf>2</inf>Cu<inf>3</inf>O<inf>10</inf> superconductor tapes. This result is consistent with the previous calculations on frozen flux superconductor in a nanomagnet–superconductor hybrid system.

Original languageEnglish
Pages (from-to)1573-1578
Number of pages6
JournalApplied Physics A: Materials Science and Processing
Volume120
Issue number4
DOIs
Publication statusPublished - 17 Jul 2015

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Critical current density (superconductivity)
Tapes
Superconducting materials
Coprecipitation
Hybrid systems
Powders
X ray powder diffraction
cobalt ferrite
Magnetic fields
Fluxes
Nanoparticles
Microstructure
Scanning electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)

Cite this

@article{9693f78c5c64408a8ce35b10384e58fa,
title = "Transport critical current density of (Bi1.6Pb0.4)Sr2Ca2Cu3O10/Ag superconductor tapes with addition of nanosized CoFe2O4",
abstract = "The effect of nanosized CoFe2O4 (60 nm) addition on the transport critical current density, Jc, of (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)x (x = 0–0.05 wt{\%}) superconductor prepared by the co-precipitation method was investigated. The optimal Jc (measured using the four-point probe method) was observed in the x = 0.01 wt{\%} pellets. Using this optimal wt{\%}, Ag-sheathed (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)0.01 superconductor tapes were fabricated using the powder-in-tube method. The tapes were sintered for 50 and 100 h at 845 °C. The phase and microstructure of the samples were determined using the powder X-ray diffraction method and scanning electron microscopy, respectively. The temperature dependence of Jc for the tapes in various applied magnetic fields was also measured. Jc of (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)0.01/Ag tapes sintered for 100 h was 22,420 A/cm2 at 30 K. The non-added tapes sintered for 100 h showed a much lower Jc (8280 A/cm2 at 30 K). This study showed that addition of CoFe2O4 nanoparticles enhanced the transport critical current density in the (Bi1.6Pb0.4)Sr2Ca2Cu3O10 superconductor tapes. This result is consistent with the previous calculations on frozen flux superconductor in a nanomagnet–superconductor hybrid system.",
author = "M. Hafiz and {Abd. Shukor}, Roslan",
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T1 - Transport critical current density of (Bi1.6Pb0.4)Sr2Ca2Cu3O10/Ag superconductor tapes with addition of nanosized CoFe2O4

AU - Hafiz, M.

AU - Abd. Shukor, Roslan

PY - 2015/7/17

Y1 - 2015/7/17

N2 - The effect of nanosized CoFe2O4 (60 nm) addition on the transport critical current density, Jc, of (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)x (x = 0–0.05 wt%) superconductor prepared by the co-precipitation method was investigated. The optimal Jc (measured using the four-point probe method) was observed in the x = 0.01 wt% pellets. Using this optimal wt%, Ag-sheathed (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)0.01 superconductor tapes were fabricated using the powder-in-tube method. The tapes were sintered for 50 and 100 h at 845 °C. The phase and microstructure of the samples were determined using the powder X-ray diffraction method and scanning electron microscopy, respectively. The temperature dependence of Jc for the tapes in various applied magnetic fields was also measured. Jc of (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)0.01/Ag tapes sintered for 100 h was 22,420 A/cm2 at 30 K. The non-added tapes sintered for 100 h showed a much lower Jc (8280 A/cm2 at 30 K). This study showed that addition of CoFe2O4 nanoparticles enhanced the transport critical current density in the (Bi1.6Pb0.4)Sr2Ca2Cu3O10 superconductor tapes. This result is consistent with the previous calculations on frozen flux superconductor in a nanomagnet–superconductor hybrid system.

AB - The effect of nanosized CoFe2O4 (60 nm) addition on the transport critical current density, Jc, of (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)x (x = 0–0.05 wt%) superconductor prepared by the co-precipitation method was investigated. The optimal Jc (measured using the four-point probe method) was observed in the x = 0.01 wt% pellets. Using this optimal wt%, Ag-sheathed (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)0.01 superconductor tapes were fabricated using the powder-in-tube method. The tapes were sintered for 50 and 100 h at 845 °C. The phase and microstructure of the samples were determined using the powder X-ray diffraction method and scanning electron microscopy, respectively. The temperature dependence of Jc for the tapes in various applied magnetic fields was also measured. Jc of (Bi1.6Pb0.4)Sr2Ca2Cu3O10(CoFe2O4)0.01/Ag tapes sintered for 100 h was 22,420 A/cm2 at 30 K. The non-added tapes sintered for 100 h showed a much lower Jc (8280 A/cm2 at 30 K). This study showed that addition of CoFe2O4 nanoparticles enhanced the transport critical current density in the (Bi1.6Pb0.4)Sr2Ca2Cu3O10 superconductor tapes. This result is consistent with the previous calculations on frozen flux superconductor in a nanomagnet–superconductor hybrid system.

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