Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition

A. Takagi, T. Yamazaki, Tetsuo Oka, Y. Yanagi, Y. Itoh, M. Yoshikawa, Y. Yamada, U. Mizutani

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Abstract

The NdBa2Cu3Oy (Nd123) bulk superconductor, to which Nd4Ba2Cu2O10 (Nd422) particles were intentionally added, was prepared through the so-called MMTG process in Ar (99% purity) flowing atmosphere at an ambient pressure. The quasi-single crystal thus grown was about 1 cm × 1 cm × 1 cm in dimension. It turned out that the Nd422 particles were uniformly distributed in the Nd123-phase matrix in a fashion similar to the distribution of the intentionally added Y211 particles in the Y123 phase matrix. The superconducting transition temperature Tc for the sample subjected to post-annealing in oxygen atmosphere was 94 K. The critical current density Jc was determined to be 45 000 A/cm2 at 77 K and 1 T, when the field was applied parallel to the c-axis of the sample. To the best of our knowledge, the Jc value is the highest and the size of the quasi-single crystal is the largest in the melt-textured Nd123 bulk superconductors so far reported.

Original languageEnglish
Pages (from-to)222-226
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume250
Issue number3-4
DOIs
Publication statusPublished - 1995 Aug 15
Externally publishedYes

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Superconducting materials
Single crystals
preparation
Superconducting transition temperature
atmospheres
single crystals
Annealing
matrices
Oxygen
critical current
purity
transition temperature
current density
annealing
oxygen

ASJC Scopus subject areas

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

Cite this

Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition. / Takagi, A.; Yamazaki, T.; Oka, Tetsuo; Yanagi, Y.; Itoh, Y.; Yoshikawa, M.; Yamada, Y.; Mizutani, U.

In: Physica C: Superconductivity and its Applications, Vol. 250, No. 3-4, 15.08.1995, p. 222-226.

Research output: Contribution to journalArticle

Takagi, A, Yamazaki, T, Oka, T, Yanagi, Y, Itoh, Y, Yoshikawa, M, Yamada, Y & Mizutani, U 1995, 'Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition', Physica C: Superconductivity and its Applications, vol. 250, no. 3-4, pp. 222-226. https://doi.org/10.1016/0921-4534(95)00350-9
Takagi, A. ; Yamazaki, T. ; Oka, Tetsuo ; Yanagi, Y. ; Itoh, Y. ; Yoshikawa, M. ; Yamada, Y. ; Mizutani, U. / Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition. In: Physica C: Superconductivity and its Applications. 1995 ; Vol. 250, No. 3-4. pp. 222-226.
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