Carbon nanofibers addition on transport and superconducting properties of bulk YBa2Cu3O7−δ material prepared via co-precipitation

Nurul Auni Khalid, Mohd Mustafa Awang Kechik, Nur Atikah Baharuddin, Chen Soo Kien, Hussein Baqiah, Lim Kean Pah, Abdul Halim Shaari, Zainal Abidin Talib, Azhan Hashim, Masato Murakami, Muralidhar Miryala

研究成果: Article査読

抄録

The effects of carbon nanofibers addition on transport and superconducting properties of YBa2Cu3O7−δ (Y-123) superconductor were studied. Y-123 was prepared using co-precipitation method for good quality bulk of high temperature superconducting material. Carbon nanofibers with 0.2–0.8 wt% were added into Y-123 superconductors. The samples were characterized using electrical resistance measurement for critical temperature (Tc) and critical current density (Jc), powder X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray analysis. Most of the samples indicated a dominant Y-123 phase of an orthorhombic structure with a minor phase of BaCO3 and Y-124. Onset critical temperature was found to decrease from 90.5 to 80 K with increasing of carbon nanofibers concentration. The Jc for pure sample is 11 A/cm2 at 30 K while the Jc of sample with 0.4 wt% carbon nanofibers is 830 A/cm2 at 30 K. Introduction of carbon nanofibers enhanced Jc significantly. However, further addition of carbon nanofibers in Y-123 superconductor caused degradation in Jc.

本文言語English
ページ(範囲)16983-16990
ページ数8
ジャーナルJournal of Materials Science: Materials in Electronics
31
19
DOI
出版ステータスPublished - 2020 10 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 凝縮系物理学
  • 電子工学および電気工学

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