Effect of potassium addition on YBa2Cu3Ox superconductors

Kazuo Inoue, Naomichi Sakai, Masato Murakami, I. Hirabayashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.

Original languageEnglish
Pages (from-to)128-132
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume445-448
Issue number1-2
DOIs
Publication statusPublished - 2006 Oct 1

Fingerprint

Superconductivity
Superconducting materials
Potassium
potassium
superconductivity
Annealing
Ions
Oxygen
annealing
oxygen
ions
Doping (additives)
substitutes
atmospheres

Keywords

  • Bulk
  • Potassium
  • YBaCuO

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Effect of potassium addition on YBa2Cu3Ox superconductors. / Inoue, Kazuo; Sakai, Naomichi; Murakami, Masato; Hirabayashi, I.

In: Physica C: Superconductivity and its Applications, Vol. 445-448, No. 1-2, 01.10.2006, p. 128-132.

Research output: Contribution to journalArticle

@article{a31061af7fae40e3828b9f0eabf30869,
title = "Effect of potassium addition on YBa2Cu3Ox superconductors",
abstract = "Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.",
keywords = "Bulk, Potassium, YBaCuO",
author = "Kazuo Inoue and Naomichi Sakai and Masato Murakami and I. Hirabayashi",
year = "2006",
month = "10",
day = "1",
doi = "10.1016/j.physc.2006.03.093",
language = "English",
volume = "445-448",
pages = "128--132",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Effect of potassium addition on YBa2Cu3Ox superconductors

AU - Inoue, Kazuo

AU - Sakai, Naomichi

AU - Murakami, Masato

AU - Hirabayashi, I.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.

AB - Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.

KW - Bulk

KW - Potassium

KW - YBaCuO

UR - http://www.scopus.com/inward/record.url?scp=33748183283&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748183283&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2006.03.093

DO - 10.1016/j.physc.2006.03.093

M3 - Article

AN - SCOPUS:33748183283

VL - 445-448

SP - 128

EP - 132

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 1-2

ER -