Superconducting current density profiles estimated from the flux density distributionin yba2cu30^ thin films

Yuko Yokoyama; Yoshishige Suzuki; Yuichi Hasumi; Haruhiko Obara; Takashi Yosimi; Yasuyo Kita; Shin Kosaka; Sadafumi Yoshida

doi:10.1143/JJAP.30.L1864

Superconducting current density profiles estimated from the flux density distributionin yba2cu30^ thin films

Yuko Yokoyama, Yoshishige Suzuki, Yuichi Hasumi, Haruhiko Obara, Takashi Yosimi, Yasuyo Kita, Shin Kosaka, Sadafumi Yoshida

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The flux penetration in superconducting thin films has been observed by means of the magnetooptical Faraday effect in iron garnet films. Bi- and Ga-substituted YIG films were used for the observation of the flux density distribution for thedisk-shaped YBa2Cu3Oxfilms with a radius of 0.5 mm and a thickness of 1800. Critical current densityJcwas estimated from the whole profile of the flux density distribution without using Bean’s model. The estimatedJcis about6 x 106A/cm2at 10 K, and this value is smaller than that estimated using Bean’s model from the remanent magnetizationat the same temperature.

Original language	English
Pages (from-to)	L 1864-L 1867
Journal	Japanese Journal of Applied Physics
Volume	30
Issue number	11A
DOIs	https://doi.org/10.1143/JJAP.30.L1864
Publication status	Published - 1991 Nov
Externally published	Yes

Keywords

Bean's model
Critical current density
Garnet film
Y-Ba-Cu-O

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.30.L1864

Cite this

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title = "Superconducting current density profiles estimated from the flux density distributionin yba2cu30^ thin films",

abstract = "The flux penetration in superconducting thin films has been observed by means of the magnetooptical Faraday effect in iron garnet films. Bi- and Ga-substituted YIG films were used for the observation of the flux density distribution for thedisk-shaped YBa2Cu3Oxfilms with a radius of 0.5 mm and a thickness of 1800. Critical current densityJcwas estimated from the whole profile of the flux density distribution without using Bean{\textquoteright}s model. The estimatedJcis about6 x 106A/cm2at 10 K, and this value is smaller than that estimated using Bean{\textquoteright}s model from the remanent magnetizationat the same temperature.",

keywords = "Bean's model, Critical current density, Garnet film, Y-Ba-Cu-O",

author = "Yuko Yokoyama and Yoshishige Suzuki and Yuichi Hasumi and Haruhiko Obara and Takashi Yosimi and Yasuyo Kita and Shin Kosaka and Sadafumi Yoshida",

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doi = "10.1143/JJAP.30.L1864",

language = "English",

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TY - JOUR

T1 - Superconducting current density profiles estimated from the flux density distributionin yba2cu30^ thin films

AU - Yokoyama, Yuko

AU - Suzuki, Yoshishige

AU - Hasumi, Yuichi

AU - Obara, Haruhiko

AU - Yosimi, Takashi

AU - Kita, Yasuyo

AU - Kosaka, Shin

AU - Yoshida, Sadafumi

PY - 1991/11

Y1 - 1991/11

N2 - The flux penetration in superconducting thin films has been observed by means of the magnetooptical Faraday effect in iron garnet films. Bi- and Ga-substituted YIG films were used for the observation of the flux density distribution for thedisk-shaped YBa2Cu3Oxfilms with a radius of 0.5 mm and a thickness of 1800. Critical current densityJcwas estimated from the whole profile of the flux density distribution without using Bean’s model. The estimatedJcis about6 x 106A/cm2at 10 K, and this value is smaller than that estimated using Bean’s model from the remanent magnetizationat the same temperature.

AB - The flux penetration in superconducting thin films has been observed by means of the magnetooptical Faraday effect in iron garnet films. Bi- and Ga-substituted YIG films were used for the observation of the flux density distribution for thedisk-shaped YBa2Cu3Oxfilms with a radius of 0.5 mm and a thickness of 1800. Critical current densityJcwas estimated from the whole profile of the flux density distribution without using Bean’s model. The estimatedJcis about6 x 106A/cm2at 10 K, and this value is smaller than that estimated using Bean’s model from the remanent magnetizationat the same temperature.

KW - Bean's model

KW - Critical current density

KW - Garnet film

KW - Y-Ba-Cu-O

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Superconducting current density profiles estimated from the flux density distributionin yba2cu30^ thin films

Abstract

Keywords

ASJC Scopus subject areas

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