Direct Observation of Flux Behavior in High-Tc Oxide Superconductors Using The Faraday Effect of Iron Garnet Films

Satoshi Gotoh; Naoki Koshizuka; Masashi Yoshida; Masato Murakami; Shoji Tanaka

doi:10.1143/JJAP.29.L1083

Direct Observation of Flux Behavior in High-T_c Oxide Superconductors Using The Faraday Effect of Iron Garnet Films

Satoshi Gotoh, Naoki Koshizuka, Masashi Yoshida, Masato Murakami, Shoji Tanaka

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

37 Citations (Scopus)

Abstract

A new direct observation method for the dynamical magnetic flux behavior in superconductors was developed by using the Faraday effect of an iron garnet film with perpendicular magnetization and stripe domains. The domain structure observed optically in the iron garnet film in contact with an YBa₂Cu₃O_x sample reveals the magnetic field distribution of the latter. It was found that the flux gradient was nonuniform due to the inhomogeneous distribution of fine Y₂BaCuO₅ inclusions, and the region with the largest pinning force was located in the sample used.

Original language	English
Pages (from-to)	L1083-L1085
Journal	Japanese Journal of Applied Physics
Volume	29
Issue number	7
DOIs	https://doi.org/10.1143/JJAP.29.L1083
Publication status	Published - 1990 Jul
Externally published	Yes

Keywords

Faraday effect
Flux gradient
Iron garnet
Pinning force
Residual magnetization
Stripe domain
Ybacuo

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.29.L1083

Cite this

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title = "Direct Observation of Flux Behavior in High-Tc Oxide Superconductors Using The Faraday Effect of Iron Garnet Films",

abstract = "A new direct observation method for the dynamical magnetic flux behavior in superconductors was developed by using the Faraday effect of an iron garnet film with perpendicular magnetization and stripe domains. The domain structure observed optically in the iron garnet film in contact with an YBa2Cu3Ox sample reveals the magnetic field distribution of the latter. It was found that the flux gradient was nonuniform due to the inhomogeneous distribution of fine Y2BaCuO5 inclusions, and the region with the largest pinning force was located in the sample used.",

keywords = "Faraday effect, Flux gradient, Iron garnet, Pinning force, Residual magnetization, Stripe domain, Ybacuo",

author = "Satoshi Gotoh and Naoki Koshizuka and Masashi Yoshida and Masato Murakami and Shoji Tanaka",

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AU - Gotoh, Satoshi

AU - Koshizuka, Naoki

AU - Yoshida, Masashi

AU - Murakami, Masato

AU - Tanaka, Shoji

PY - 1990/7

Y1 - 1990/7

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AB - A new direct observation method for the dynamical magnetic flux behavior in superconductors was developed by using the Faraday effect of an iron garnet film with perpendicular magnetization and stripe domains. The domain structure observed optically in the iron garnet film in contact with an YBa2Cu3Ox sample reveals the magnetic field distribution of the latter. It was found that the flux gradient was nonuniform due to the inhomogeneous distribution of fine Y2BaCuO5 inclusions, and the region with the largest pinning force was located in the sample used.

KW - Faraday effect

KW - Flux gradient

KW - Iron garnet

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KW - Residual magnetization

KW - Stripe domain

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