Refinement of Nd-422 phase trapped in a Nd1+δBa2-δCu3O7-γ superconducting matrix

F. Frangi, S. I. Yoo, Naomichi Sakai, Masato Murakami

研究成果: Article

5 引用 (Scopus)

抄録

The possibility of controlling Nd-422 phase dimension and morphology, both in the partially melted state and in the final superconducting matrix, was investigated. Nd-Ba-Cu-O samples were prepared by the melt powder melt growth (MPMG) technique. Precursor materials containing Nd as either Nd2O3 or Nd-422, formed during precursor quenching, were used. The role of Pt in Nd-422 refining was analyzed. The effect on Nd-422 nucleation and growth, of stoichiometries with increasing Nd-422 molar excesses (0%, 10%, 20%, and 40%) combined with different heating processes, up to the partially melted state, were examined. Uniformly distributed needle-like particles (1 μm diameter and 10-15 μm length) were obtained at 1120°C and resulted in a further refined distribution trapped in completely processed samples.

元の言語English
ページ(範囲)1990-2001
ページ数12
ジャーナルJournal of Materials Research
12
発行部数8
出版物ステータスPublished - 1997 8
外部発表Yes

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Industrial heating
refining
matrices
needles
Stoichiometry
Needles
Powders
Refining
stoichiometry
Quenching
Nucleation
quenching
nucleation
heating
neodymium oxide

ASJC Scopus subject areas

  • Materials Science(all)

これを引用

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abstract = "The possibility of controlling Nd-422 phase dimension and morphology, both in the partially melted state and in the final superconducting matrix, was investigated. Nd-Ba-Cu-O samples were prepared by the melt powder melt growth (MPMG) technique. Precursor materials containing Nd as either Nd2O3 or Nd-422, formed during precursor quenching, were used. The role of Pt in Nd-422 refining was analyzed. The effect on Nd-422 nucleation and growth, of stoichiometries with increasing Nd-422 molar excesses (0{\%}, 10{\%}, 20{\%}, and 40{\%}) combined with different heating processes, up to the partially melted state, were examined. Uniformly distributed needle-like particles (1 μm diameter and 10-15 μm length) were obtained at 1120°C and resulted in a further refined distribution trapped in completely processed samples.",
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T1 - Refinement of Nd-422 phase trapped in a Nd1+δBa2-δCu3O7-γ superconducting matrix

AU - Frangi, F.

AU - Yoo, S. I.

AU - Sakai, Naomichi

AU - Murakami, Masato

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N2 - The possibility of controlling Nd-422 phase dimension and morphology, both in the partially melted state and in the final superconducting matrix, was investigated. Nd-Ba-Cu-O samples were prepared by the melt powder melt growth (MPMG) technique. Precursor materials containing Nd as either Nd2O3 or Nd-422, formed during precursor quenching, were used. The role of Pt in Nd-422 refining was analyzed. The effect on Nd-422 nucleation and growth, of stoichiometries with increasing Nd-422 molar excesses (0%, 10%, 20%, and 40%) combined with different heating processes, up to the partially melted state, were examined. Uniformly distributed needle-like particles (1 μm diameter and 10-15 μm length) were obtained at 1120°C and resulted in a further refined distribution trapped in completely processed samples.

AB - The possibility of controlling Nd-422 phase dimension and morphology, both in the partially melted state and in the final superconducting matrix, was investigated. Nd-Ba-Cu-O samples were prepared by the melt powder melt growth (MPMG) technique. Precursor materials containing Nd as either Nd2O3 or Nd-422, formed during precursor quenching, were used. The role of Pt in Nd-422 refining was analyzed. The effect on Nd-422 nucleation and growth, of stoichiometries with increasing Nd-422 molar excesses (0%, 10%, 20%, and 40%) combined with different heating processes, up to the partially melted state, were examined. Uniformly distributed needle-like particles (1 μm diameter and 10-15 μm length) were obtained at 1120°C and resulted in a further refined distribution trapped in completely processed samples.

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