Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition

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

doi:10.1016/0921-4534(95)00350-9

Preparation of melt-textured NdBa₂Cu₃O_y bulk with Nd₄Ba₂Cu₂O₁₀ addition

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

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The NdBa₂Cu₃O_y (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 T_c for the sample subjected to post-annealing in oxygen atmosphere was 94 K. The critical current density J_c 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 J_c 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 language	English
Pages (from-to)	222-226
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	250
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(95)00350-9
Publication status	Published - 1995 Aug 15
Externally published	Yes

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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10.1016/0921-4534(95)00350-9

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title = "Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition",

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.",

author = "A. Takagi and T. Yamazaki and T. Oka and Y. Yanagi and Y. Itoh and M. Yoshikawa and Y. Yamada and U. Mizutani",

year = "1995",

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doi = "10.1016/0921-4534(95)00350-9",

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AU - Takagi, A.

AU - Yamazaki, T.

AU - Oka, T.

AU - Yanagi, Y.

AU - Itoh, Y.

AU - Yoshikawa, M.

AU - Yamada, Y.

AU - Mizutani, U.

PY - 1995/8/15

Y1 - 1995/8/15

N2 - 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.

AB - 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.

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Preparation of melt-textured NdBa₂Cu₃O_y bulk with Nd₄Ba₂Cu₂O₁₀ addition

Abstract

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