Enhanced Tc and strong flux pinning in melt-processed NdBa2Cu3Oy superconductors

Sang Im Yoo, Masato Murakami, Naomichi Sakai, Takamitsu Higuchi, Shoji Tanaka

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

The effects of various oxygen partial pressures (PO(2)) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Nd123) superconductors have been systematically investigated. Unlike in air or O2, samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc's of 95-96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.

Original languageEnglish
Pages (from-to)1000-1003
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume33
Issue number7 B
Publication statusPublished - 1994
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
Superconducting materials
Oxygen
Hysteresis loops
Partial pressure
Magnetization
oxygen
Magnetic fields
partial pressure
Processing
Air
hysteresis
atmospheres
magnetization
air
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Enhanced Tc and strong flux pinning in melt-processed NdBa2Cu3Oy superconductors. / Yoo, Sang Im; Murakami, Masato; Sakai, Naomichi; Higuchi, Takamitsu; Tanaka, Shoji.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 33, No. 7 B, 1994, p. 1000-1003.

Research output: Contribution to journalArticle

@article{48b141e5c6d1473d8c918139e5b9d689,
title = "Enhanced Tc and strong flux pinning in melt-processed NdBa2Cu3Oy superconductors",
abstract = "The effects of various oxygen partial pressures (PO(2)) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Nd123) superconductors have been systematically investigated. Unlike in air or O2, samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc's of 95-96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1{\%} O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.",
author = "Yoo, {Sang Im} and Masato Murakami and Naomichi Sakai and Takamitsu Higuchi and Shoji Tanaka",
year = "1994",
language = "English",
volume = "33",
pages = "1000--1003",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "7 B",

}

TY - JOUR

T1 - Enhanced Tc and strong flux pinning in melt-processed NdBa2Cu3Oy superconductors

AU - Yoo, Sang Im

AU - Murakami, Masato

AU - Sakai, Naomichi

AU - Higuchi, Takamitsu

AU - Tanaka, Shoji

PY - 1994

Y1 - 1994

N2 - The effects of various oxygen partial pressures (PO(2)) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Nd123) superconductors have been systematically investigated. Unlike in air or O2, samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc's of 95-96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.

AB - The effects of various oxygen partial pressures (PO(2)) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Nd123) superconductors have been systematically investigated. Unlike in air or O2, samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc's of 95-96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.

UR - http://www.scopus.com/inward/record.url?scp=0028460917&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028460917&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0028460917

VL - 33

SP - 1000

EP - 1003

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 7 B

ER -