Magneto-optical characterizations of composite superconductors

M. Zamboni; M. Muralidhar; S. Koishikawa; M. Murakami

doi:10.1088/0953-2048/13/6/338

Magneto-optical characterizations of composite superconductors

M. Zamboni, M. Muralidhar, S. Koishikawa, M. Murakami

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

The magnetic flux dynamic in RE-Ba-Cu-O (RE = La, Nd, Sm, Eu or Gd) composite superconductors processed by the oxygen-controlled-melt-growth (OCMG) method was investigated by magneto-optical (M-O) technique using an iron-garnet film with in-plane magnetization. An external magnetic field H was applied parallel to sample's c-axis (H ∥ c) up to 5000 Oe at different temperatures. The field distribution as well as the current paths were clearly visualized and correlated to the sample microstructure. The M-O images were associated with the data obtained by analysing the magnetization curves. Critical current densities were calculated from magnetization hysteresis measurements. The direct and detailed knowledge of the field behaviour provided by the M-O images allows precise interpretation of the magnetization loops.

Original language	English
Pages (from-to)	811-815
Number of pages	5
Journal	Superconductor Science and Technology
Volume	13
Issue number	6
DOIs	https://doi.org/10.1088/0953-2048/13/6/338
Publication status	Published - 2000 Jun 1
Externally published	Yes
Event	The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn Duration: 1999 Oct 19 → 1999 Oct 22

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/13/6/338

Cite this

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title = "Magneto-optical characterizations of composite superconductors",

abstract = "The magnetic flux dynamic in RE-Ba-Cu-O (RE = La, Nd, Sm, Eu or Gd) composite superconductors processed by the oxygen-controlled-melt-growth (OCMG) method was investigated by magneto-optical (M-O) technique using an iron-garnet film with in-plane magnetization. An external magnetic field H was applied parallel to sample's c-axis (H ∥ c) up to 5000 Oe at different temperatures. The field distribution as well as the current paths were clearly visualized and correlated to the sample microstructure. The M-O images were associated with the data obtained by analysing the magnetization curves. Critical current densities were calculated from magnetization hysteresis measurements. The direct and detailed knowledge of the field behaviour provided by the M-O images allows precise interpretation of the magnetization loops.",

author = "M. Zamboni and M. Muralidhar and S. Koishikawa and M. Murakami",

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T1 - Magneto-optical characterizations of composite superconductors

AU - Zamboni, M.

AU - Muralidhar, M.

AU - Koishikawa, S.

AU - Murakami, M.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - The magnetic flux dynamic in RE-Ba-Cu-O (RE = La, Nd, Sm, Eu or Gd) composite superconductors processed by the oxygen-controlled-melt-growth (OCMG) method was investigated by magneto-optical (M-O) technique using an iron-garnet film with in-plane magnetization. An external magnetic field H was applied parallel to sample's c-axis (H ∥ c) up to 5000 Oe at different temperatures. The field distribution as well as the current paths were clearly visualized and correlated to the sample microstructure. The M-O images were associated with the data obtained by analysing the magnetization curves. Critical current densities were calculated from magnetization hysteresis measurements. The direct and detailed knowledge of the field behaviour provided by the M-O images allows precise interpretation of the magnetization loops.

AB - The magnetic flux dynamic in RE-Ba-Cu-O (RE = La, Nd, Sm, Eu or Gd) composite superconductors processed by the oxygen-controlled-melt-growth (OCMG) method was investigated by magneto-optical (M-O) technique using an iron-garnet film with in-plane magnetization. An external magnetic field H was applied parallel to sample's c-axis (H ∥ c) up to 5000 Oe at different temperatures. The field distribution as well as the current paths were clearly visualized and correlated to the sample microstructure. The M-O images were associated with the data obtained by analysing the magnetization curves. Critical current densities were calculated from magnetization hysteresis measurements. The direct and detailed knowledge of the field behaviour provided by the M-O images allows precise interpretation of the magnetization loops.

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VL - 13

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EP - 815

JO - Superconductor Science and Technology

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T2 - The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials

Y2 - 19 October 1999 through 22 October 1999

ER -

Magneto-optical characterizations of composite superconductors

Abstract

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