Calcium-Substituted Y3Ba5Cu8O18 Ceramics Synthesized via Thermal Treatment Method: Structural and Superconducting Properties

Mustafa Mousa Dihom, Abdul Halim Shaari, Hussein Baqiah, Chen Soo Kien, Rabaah Syahidah Azis, Roslan Abd. Shukor, Naif Mohammed Al-Hada, Mohd Mustafa Awang Kechik, Zainal Abidin Talib

Research output: Contribution to journalArticle

Abstract

In this work, Y3(Ba1−xCax)5Cu8O18 compounds with x = 0.00, 0.01, 0.02, 0.03 and 0.05 were synthesized by thermal treatment of aqueous solution of metal nitrates and polyvinylpyrrolidone (PVP). The effects of Ca substitution on the crystal structure, electrical resistance and the microstructure of samples were investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), four-point probe measurement and AC susceptibility. FESEM analysis showed that there was an increase in the grain size and compactness. The zero-resistance critical temperature decreased from 92 K for the pure sample to 83 K for sample x = 0.05. From AC susceptibility result, the intra- and inter-granular loss peaks shifted toward lower temperature and become wider and broader with the increase of Ca substitution due to the weakening of grain coupling. On the other hand, the inter-granular critical current density (Jcm) was found to increase with Ca substitution and has the highest value Jcm = 35 A cm− 2 at x = 0.05, indicating that the Ca substitution was associated with the formation of pinning centres in the Y-358 matrix.

Original languageEnglish
JournalJournal of Superconductivity and Novel Magnetism
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

calcium
Calcium
Substitution reactions
Heat treatment
ceramics
substitutes
Field emission
field emission
alternating current
magnetic permeability
Povidone
Scanning electron microscopy
scanning electron microscopy
Acoustic impedance
void ratio
electrical resistance
Nitrates
nitrates
critical current
critical temperature

Keywords

  • AC susceptibility
  • Ca substitution
  • Critical temperature
  • Thermal treatment
  • Y-Ba-Cu-O compounds

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Calcium-Substituted Y3Ba5Cu8O18 Ceramics Synthesized via Thermal Treatment Method : Structural and Superconducting Properties. / Dihom, Mustafa Mousa; Shaari, Abdul Halim; Baqiah, Hussein; Kien, Chen Soo; Azis, Rabaah Syahidah; Abd. Shukor, Roslan; Al-Hada, Naif Mohammed; Kechik, Mohd Mustafa Awang; Talib, Zainal Abidin.

In: Journal of Superconductivity and Novel Magnetism, 01.01.2018.

Research output: Contribution to journalArticle

Dihom, Mustafa Mousa ; Shaari, Abdul Halim ; Baqiah, Hussein ; Kien, Chen Soo ; Azis, Rabaah Syahidah ; Abd. Shukor, Roslan ; Al-Hada, Naif Mohammed ; Kechik, Mohd Mustafa Awang ; Talib, Zainal Abidin. / Calcium-Substituted Y3Ba5Cu8O18 Ceramics Synthesized via Thermal Treatment Method : Structural and Superconducting Properties. In: Journal of Superconductivity and Novel Magnetism. 2018.
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AU - Dihom, Mustafa Mousa

AU - Shaari, Abdul Halim

AU - Baqiah, Hussein

AU - Kien, Chen Soo

AU - Azis, Rabaah Syahidah

AU - Abd. Shukor, Roslan

AU - Al-Hada, Naif Mohammed

AU - Kechik, Mohd Mustafa Awang

AU - Talib, Zainal Abidin

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AB - In this work, Y3(Ba1−xCax)5Cu8O18 compounds with x = 0.00, 0.01, 0.02, 0.03 and 0.05 were synthesized by thermal treatment of aqueous solution of metal nitrates and polyvinylpyrrolidone (PVP). The effects of Ca substitution on the crystal structure, electrical resistance and the microstructure of samples were investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), four-point probe measurement and AC susceptibility. FESEM analysis showed that there was an increase in the grain size and compactness. The zero-resistance critical temperature decreased from 92 K for the pure sample to 83 K for sample x = 0.05. From AC susceptibility result, the intra- and inter-granular loss peaks shifted toward lower temperature and become wider and broader with the increase of Ca substitution due to the weakening of grain coupling. On the other hand, the inter-granular critical current density (Jcm) was found to increase with Ca substitution and has the highest value Jcm = 35 A cm− 2 at x = 0.05, indicating that the Ca substitution was associated with the formation of pinning centres in the Y-358 matrix.

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