Effect of different nanosized mgo on the transport critical current density of Bi1.6Pb0.4Sr2Ca2Cu 3O10 superconductor

Nabil A A Yahya, Roslan Abd. Shukor

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Magnesium oxide powders with average particle size 20 and 40 nm were added into Bi1.6Pb0.4Sr2Ca2Cu 3O10 (Bi,Pb-2223) with nominal composition Bi 1.6Pb0.4Sr2Ca2Cu3O 10(MgO) x (x=0-0.15 wt.%). The transport critical current density (J c) and transition temperature were determined using the four-probe method. The structure and microstructure were examined by X-ray diffraction method and scanning electron microscopy, respectively. The transition temperature and J c increased with nanosized MgO addition. The 20 nm MgO added samples showed a higher J c compared with the 40 nm MgO added samples. J c was higher as size of MgO was closer to the coherence length of the superconductor. These results showed that the size variation of flux pinning center at the nanoscale is important in enhancing J c.

Original languageEnglish
Pages (from-to)329-335
Number of pages7
JournalJournal of Superconductivity and Novel Magnetism
Volume27
Issue number2
DOIs
Publication statusPublished - Feb 2014

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Magnesium Oxide
Critical current density (superconductivity)
Flux pinning
Powders
Superconducting materials
Superconducting transition temperature
critical current
Particle size
current density
X ray diffraction
Microstructure
Scanning electron microscopy
Magnesia
Chemical analysis
transition temperature
magnesium oxides
flux pinning
microstructure
scanning electron microscopy
diffraction

Keywords

  • Critical current density
  • Electrical properties
  • Nano MgO
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "Magnesium oxide powders with average particle size 20 and 40 nm were added into Bi1.6Pb0.4Sr2Ca2Cu 3O10 (Bi,Pb-2223) with nominal composition Bi 1.6Pb0.4Sr2Ca2Cu3O 10(MgO) x (x=0-0.15 wt.{\%}). The transport critical current density (J c) and transition temperature were determined using the four-probe method. The structure and microstructure were examined by X-ray diffraction method and scanning electron microscopy, respectively. The transition temperature and J c increased with nanosized MgO addition. The 20 nm MgO added samples showed a higher J c compared with the 40 nm MgO added samples. J c was higher as size of MgO was closer to the coherence length of the superconductor. These results showed that the size variation of flux pinning center at the nanoscale is important in enhancing J c.",
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AU - Yahya, Nabil A A

AU - Abd. Shukor, Roslan

PY - 2014/2

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N2 - Magnesium oxide powders with average particle size 20 and 40 nm were added into Bi1.6Pb0.4Sr2Ca2Cu 3O10 (Bi,Pb-2223) with nominal composition Bi 1.6Pb0.4Sr2Ca2Cu3O 10(MgO) x (x=0-0.15 wt.%). The transport critical current density (J c) and transition temperature were determined using the four-probe method. The structure and microstructure were examined by X-ray diffraction method and scanning electron microscopy, respectively. The transition temperature and J c increased with nanosized MgO addition. The 20 nm MgO added samples showed a higher J c compared with the 40 nm MgO added samples. J c was higher as size of MgO was closer to the coherence length of the superconductor. These results showed that the size variation of flux pinning center at the nanoscale is important in enhancing J c.

AB - Magnesium oxide powders with average particle size 20 and 40 nm were added into Bi1.6Pb0.4Sr2Ca2Cu 3O10 (Bi,Pb-2223) with nominal composition Bi 1.6Pb0.4Sr2Ca2Cu3O 10(MgO) x (x=0-0.15 wt.%). The transport critical current density (J c) and transition temperature were determined using the four-probe method. The structure and microstructure were examined by X-ray diffraction method and scanning electron microscopy, respectively. The transition temperature and J c increased with nanosized MgO addition. The 20 nm MgO added samples showed a higher J c compared with the 40 nm MgO added samples. J c was higher as size of MgO was closer to the coherence length of the superconductor. These results showed that the size variation of flux pinning center at the nanoscale is important in enhancing J c.

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