Direct observation of magnetic flux behavior in high-Tc oxide superconductors

S. Gotoh, N. Koshizuka, M. Yoshida, H. Fujimoto, Masato Murakami, H. Izumi, K. Ohata

Research output: Contribution to journalArticle

Abstract

The magnetic flux behavior in YBa2Cu3Ox specimens under various applied fields was observed at 10 K and 77 K using the Faraday effect of an iron garnet film with stripe magnetic domains. The magnetic flux distribution was determined by optical observation of the domain structure in the iron garnet film placed on the sample. The magnetic flux gradients in a crystal fabricated by the Melt-Powder-Melt-Growth (MPMG) method and in a thin film were in good agreement with those predicted by the critical state model at both 10 K and 77 K. On the other hand, in a sintered sample the flux penetrated through the superconducting weak-link regions, and no flux gradient was observed at 77 K.

Original languageEnglish
Pages (from-to)525-532
Number of pages8
JournalIEEE Translation Journal on Magnetics in Japan
Volume7
Issue number7
DOIs
Publication statusPublished - 1992 Jul
Externally publishedYes

Fingerprint

Oxide superconductors
Magnetic flux
Garnets
Iron
Fluxes
Faraday effect
Magnetic domains
Powders
Thin films
Crystals

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Direct observation of magnetic flux behavior in high-Tc oxide superconductors. / Gotoh, S.; Koshizuka, N.; Yoshida, M.; Fujimoto, H.; Murakami, Masato; Izumi, H.; Ohata, K.

In: IEEE Translation Journal on Magnetics in Japan, Vol. 7, No. 7, 07.1992, p. 525-532.

Research output: Contribution to journalArticle

Gotoh, S. ; Koshizuka, N. ; Yoshida, M. ; Fujimoto, H. ; Murakami, Masato ; Izumi, H. ; Ohata, K. / Direct observation of magnetic flux behavior in high-Tc oxide superconductors. In: IEEE Translation Journal on Magnetics in Japan. 1992 ; Vol. 7, No. 7. pp. 525-532.
@article{e43c8d33a75045ee821b25219b3d01ae,
title = "Direct observation of magnetic flux behavior in high-Tc oxide superconductors",
abstract = "The magnetic flux behavior in YBa2Cu3Ox specimens under various applied fields was observed at 10 K and 77 K using the Faraday effect of an iron garnet film with stripe magnetic domains. The magnetic flux distribution was determined by optical observation of the domain structure in the iron garnet film placed on the sample. The magnetic flux gradients in a crystal fabricated by the Melt-Powder-Melt-Growth (MPMG) method and in a thin film were in good agreement with those predicted by the critical state model at both 10 K and 77 K. On the other hand, in a sintered sample the flux penetrated through the superconducting weak-link regions, and no flux gradient was observed at 77 K.",
author = "S. Gotoh and N. Koshizuka and M. Yoshida and H. Fujimoto and Masato Murakami and H. Izumi and K. Ohata",
year = "1992",
month = "7",
doi = "10.1109/TJMJ.1992.4565442",
language = "English",
volume = "7",
pages = "525--532",
journal = "IEEE Translation Journal on Magnetics in Japan",
issn = "0882-4959",
number = "7",

}

TY - JOUR

T1 - Direct observation of magnetic flux behavior in high-Tc oxide superconductors

AU - Gotoh, S.

AU - Koshizuka, N.

AU - Yoshida, M.

AU - Fujimoto, H.

AU - Murakami, Masato

AU - Izumi, H.

AU - Ohata, K.

PY - 1992/7

Y1 - 1992/7

N2 - The magnetic flux behavior in YBa2Cu3Ox specimens under various applied fields was observed at 10 K and 77 K using the Faraday effect of an iron garnet film with stripe magnetic domains. The magnetic flux distribution was determined by optical observation of the domain structure in the iron garnet film placed on the sample. The magnetic flux gradients in a crystal fabricated by the Melt-Powder-Melt-Growth (MPMG) method and in a thin film were in good agreement with those predicted by the critical state model at both 10 K and 77 K. On the other hand, in a sintered sample the flux penetrated through the superconducting weak-link regions, and no flux gradient was observed at 77 K.

AB - The magnetic flux behavior in YBa2Cu3Ox specimens under various applied fields was observed at 10 K and 77 K using the Faraday effect of an iron garnet film with stripe magnetic domains. The magnetic flux distribution was determined by optical observation of the domain structure in the iron garnet film placed on the sample. The magnetic flux gradients in a crystal fabricated by the Melt-Powder-Melt-Growth (MPMG) method and in a thin film were in good agreement with those predicted by the critical state model at both 10 K and 77 K. On the other hand, in a sintered sample the flux penetrated through the superconducting weak-link regions, and no flux gradient was observed at 77 K.

UR - http://www.scopus.com/inward/record.url?scp=0026899566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026899566&partnerID=8YFLogxK

U2 - 10.1109/TJMJ.1992.4565442

DO - 10.1109/TJMJ.1992.4565442

M3 - Article

AN - SCOPUS:0026899566

VL - 7

SP - 525

EP - 532

JO - IEEE Translation Journal on Magnetics in Japan

JF - IEEE Translation Journal on Magnetics in Japan

SN - 0882-4959

IS - 7

ER -