Superconducting properties of melt-textured RE-Ba-Cu-O (RE

Ho, Er and Y) bulk superconductors with various RE211 contents

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.

Original languageEnglish
Pages (from-to)516-520
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Fingerprint

Superconducting materials
Annealing
Oxygen
Oxygen vacancies
oxygen
Temperature
Crystals
annealing
inoculation
Air
seeds
temperature
air
curves
crystals

Keywords

  • Critical current density
  • Er-Ba-Cu-O
  • Ho-Ba-Cu-O
  • Melt processing
  • Secondary peak effect

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

@article{991243a685c34c18bd0102e0701b795c,
title = "Superconducting properties of melt-textured RE-Ba-Cu-O (RE: Ho, Er and Y) bulk superconductors with various RE211 contents",
abstract = "We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol{\%} of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol{\%} of RE211.",
keywords = "Critical current density, Er-Ba-Cu-O, Ho-Ba-Cu-O, Melt processing, Secondary peak effect",
author = "S. Nariki and Naomichi Sakai and Masato Murakami",
year = "2003",
month = "10",
doi = "10.1016/S0921-4534(03)01006-2",
language = "English",
volume = "392-396",
pages = "516--520",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "PART 1",

}

TY - JOUR

T1 - Superconducting properties of melt-textured RE-Ba-Cu-O (RE

T2 - Ho, Er and Y) bulk superconductors with various RE211 contents

AU - Nariki, S.

AU - Sakai, Naomichi

AU - Murakami, Masato

PY - 2003/10

Y1 - 2003/10

N2 - We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.

AB - We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.

KW - Critical current density

KW - Er-Ba-Cu-O

KW - Ho-Ba-Cu-O

KW - Melt processing

KW - Secondary peak effect

UR - http://www.scopus.com/inward/record.url?scp=0041782764&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041782764&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(03)01006-2

DO - 10.1016/S0921-4534(03)01006-2

M3 - Article

VL - 392-396

SP - 516

EP - 520

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - PART 1

ER -