Superconductors for high-field use at 77 K

M. Muralidhar, N. Sakai, M. Jirsa, M. Murakami

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Magnetic measurements of (Nd0.33Eu0.38Gd 0.28)Ba2Cu3Oy showed an exceptionally high-irreversibility field. This feature was always correlated with the presence of a superconducting matter modulation and formation of a special nanometer-scale lamellar structure. High-magnification scanning tunneling microscope observations revealed that such nanoscopic lamellas consist of arrays of aligned NEG-rich clusters of 3-4 nm in size. Routinely prepared NEG-123 samples with Nd:Eu:Gd = 1:1:1 exhibit Birr of around 7 T, while the material with Nd:Eu:Gd = 1:1.25:0.85 combined with addition of 5 mol% 211 secondary phase exhibits the irreversibility line above 14 T at 77 K (Ha∥c-axis).

Original languageEnglish
Pages (from-to)567-570
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 2003 Oct
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13


  • Critical current density (J)
  • Flux pinning
  • LRE-BaCuO
  • Melt processing
  • Scanning tunneling microscope

ASJC Scopus subject areas

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


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