Superconducting properties of Nd1+xBa2-xCu3Oy single crystals isothermally grown at various temperatures

Takamitsu Higuchi; Koichiro Waki; Goro Osabe; Sang Im Yoo; Masato Murakami

doi:10.1088/0953-2048/13/6/303

Superconducting properties of Nd_1+xBa_2-xCu₃O_y single crystals isothermally grown at various temperatures

Takamitsu Higuchi, Koichiro Waki, Goro Osabe, Sang Im Yoo, Masato Murakami

Research output: Contribution to journal › Conference article

2 Citations (Scopus)

Abstract

Nd_1+xBa_2-xCu₃O_y (Nd123ss) single crystals were isothermally grown under controlled oxygen partial pressure of 1% O₂ at various growth temperatures (T_g) from 1000 to 1020°C with a flux method. The flux composition of 20 mol% NdBa₂Cu₃O_y (Nd123) and 80 mol% Ba₃Cu₅O₈ (035) was employed. Nd123ss single crystals grown at T_g ≥ 1010°C exhibited a transition temperature T_c ≈ 95 K with transition width ≈ 1 K, the peak field (B_pk) ≈ 2-3 T and the irreversibility field (B_irr) at 77 K much higher than the experimental limit of 7 T. As the growth temperature is lowered, both the B_pk and B_irr were reduced, which can be explained in terms of the chemical fluctuation which can occur at lower T_g.

Original language	English
Pages (from-to)	641-645
Number of pages	5
Journal	Superconductor Science and Technology
Volume	13
Issue number	6
DOIs	https://doi.org/10.1088/0953-2048/13/6/303
Publication status	Published - 2000 Jun 1
Externally published	Yes
Event	The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn Duration: 1999 Oct 19 → 1999 Oct 22

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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Higuchi, T., Waki, K., Osabe, G., Yoo, S. I., & Murakami, M. (2000). Superconducting properties of Nd_1+xBa_2-xCu₃O_y single crystals isothermally grown at various temperatures. Superconductor Science and Technology, 13(6), 641-645. https://doi.org/10.1088/0953-2048/13/6/303

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title = "Superconducting properties of Nd1+xBa2-xCu3Oy single crystals isothermally grown at various temperatures",

abstract = "Nd1+xBa2-xCu3Oy (Nd123ss) single crystals were isothermally grown under controlled oxygen partial pressure of 1% O2 at various growth temperatures (Tg) from 1000 to 1020°C with a flux method. The flux composition of 20 mol% NdBa2Cu3Oy (Nd123) and 80 mol% Ba3Cu5O8 (035) was employed. Nd123ss single crystals grown at Tg ≥ 1010°C exhibited a transition temperature Tc ≈ 95 K with transition width ≈ 1 K, the peak field (Bpk) ≈ 2-3 T and the irreversibility field (Birr) at 77 K much higher than the experimental limit of 7 T. As the growth temperature is lowered, both the Bpk and Birr were reduced, which can be explained in terms of the chemical fluctuation which can occur at lower Tg.",

author = "Takamitsu Higuchi and Koichiro Waki and Goro Osabe and Yoo, {Sang Im} and Masato Murakami",

year = "2000",

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TY - JOUR

T1 - Superconducting properties of Nd1+xBa2-xCu3Oy single crystals isothermally grown at various temperatures

AU - Higuchi, Takamitsu

AU - Waki, Koichiro

AU - Osabe, Goro

AU - Yoo, Sang Im

AU - Murakami, Masato

PY - 2000/6/1

Y1 - 2000/6/1

N2 - Nd1+xBa2-xCu3Oy (Nd123ss) single crystals were isothermally grown under controlled oxygen partial pressure of 1% O2 at various growth temperatures (Tg) from 1000 to 1020°C with a flux method. The flux composition of 20 mol% NdBa2Cu3Oy (Nd123) and 80 mol% Ba3Cu5O8 (035) was employed. Nd123ss single crystals grown at Tg ≥ 1010°C exhibited a transition temperature Tc ≈ 95 K with transition width ≈ 1 K, the peak field (Bpk) ≈ 2-3 T and the irreversibility field (Birr) at 77 K much higher than the experimental limit of 7 T. As the growth temperature is lowered, both the Bpk and Birr were reduced, which can be explained in terms of the chemical fluctuation which can occur at lower Tg.

AB - Nd1+xBa2-xCu3Oy (Nd123ss) single crystals were isothermally grown under controlled oxygen partial pressure of 1% O2 at various growth temperatures (Tg) from 1000 to 1020°C with a flux method. The flux composition of 20 mol% NdBa2Cu3Oy (Nd123) and 80 mol% Ba3Cu5O8 (035) was employed. Nd123ss single crystals grown at Tg ≥ 1010°C exhibited a transition temperature Tc ≈ 95 K with transition width ≈ 1 K, the peak field (Bpk) ≈ 2-3 T and the irreversibility field (Birr) at 77 K much higher than the experimental limit of 7 T. As the growth temperature is lowered, both the Bpk and Birr were reduced, which can be explained in terms of the chemical fluctuation which can occur at lower Tg.

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EP - 645

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

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T2 - The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials

Y2 - 19 October 1999 through 22 October 1999

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