Mass production of low-cost GdBaCuO bulk superconductors using a novel seed in the batch process

Muralidhar Miryala, K. Suzuki, Y. Fukumoto, A. Ishihara, M. Tomita

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We developed a batch process with cold seeding, which considerably reduces the production cost. This batch process is appropriate for fabrication of various LREBa2Cu3Oy (where LRE represents a light rare earth element) compounds as it employs novel thin film Nd-123 seeds grown on MgO crystals, compatible with all LRE-123 materials. In the first stage we are able to fabricate GdBa2Cu3Oy compound with large single grain, enhanced pinning, and good quality at a dramatically reduced cost. Magnetization results conformed that the samples have a sharp superconducting transition (around 1 K wide) with the onset Tc around 93.5 K. The self-field Jc of 72 kA/cm2 was achieved at 77 K,H//c-axis in various positions of the pellet. The trapped field measurements showed that the samples were single-domain and of good pinning performance. The trapped field observed in the best 45 mm single-grain puck of Gd-123 was in the range of 1.35T and 0.35 T at 77.3 K and 87.3 K, respectively. The batch process technology for production of melt-processed LRE-123 provides a cost-effective method to fabricate high-performance superconducting super-magnets for various commercial applications.

Original languageEnglish
Article number5624602
Pages (from-to)2702-2705
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 3
DOIs
Publication statusPublished - 2011 Jun
Externally publishedYes

Fingerprint

Superconducting materials
Seed
seeds
Puck
costs
production costs
inoculation
pellets
Costs
magnets
rare earth elements
Rare earth elements
magnetization
fabrication
Magnets
Magnetization
thin films
crystals
Fabrication
Thin films

Keywords

  • Batch process
  • Flux pinning
  • Melt-processed bulk materials
  • Superconducting magnets at 77.3 K and 87.3 K

ASJC Scopus subject areas

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

Cite this

Mass production of low-cost GdBaCuO bulk superconductors using a novel seed in the batch process. / Miryala, Muralidhar; Suzuki, K.; Fukumoto, Y.; Ishihara, A.; Tomita, M.

In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 3, 5624602, 06.2011, p. 2702-2705.

Research output: Contribution to journalArticle

Miryala, Muralidhar ; Suzuki, K. ; Fukumoto, Y. ; Ishihara, A. ; Tomita, M. / Mass production of low-cost GdBaCuO bulk superconductors using a novel seed in the batch process. In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 3. pp. 2702-2705.
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