Suppression of dendritic flux jumps in MgB2 films coated with a gold rim

Eun Mi Choi; V. V. Yurchenko; T. H. Johansen; Hyun Sook Lee; Jae Yeap Lee; Won Nam Kang; Sung Ik Lee

doi:10.1088/0953-2048/22/1/015011

Suppression of dendritic flux jumps in MgB₂ films coated with a gold rim

Eun Mi Choi
, V. V. Yurchenko
, T. H. Johansen
, Hyun Sook Lee
, Jae Yeap Lee
, Won Nam Kang
, Sung Ik Lee

Department of Physics

Sungkyunkwan University
University of Oslo
Sogang University
Pohang University of Science and Technology

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

18 Scopus citations

Abstract

An effective method for suppressing dendritic flux avalanches in MgB ₂ films is demonstrated by coating the films with a metal rim along the edges, which is where the avalanches nucleate. The effect of the partial coating has been investigated by means of magneto-optical imaging on a series of samples with golden rims of different width. Measurements of the onset field of instability reveal that such rims can substantially improve the thermo-magnetic stability of the superconducting films.

Original language	English
Article number	015011
Journal	Superconductor Science and Technology
Volume	22
Issue number	1
DOIs	https://doi.org/10.1088/0953-2048/22/1/015011
State	Published - 1 Jan 2009

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abstract = "An effective method for suppressing dendritic flux avalanches in MgB 2 films is demonstrated by coating the films with a metal rim along the edges, which is where the avalanches nucleate. The effect of the partial coating has been investigated by means of magneto-optical imaging on a series of samples with golden rims of different width. Measurements of the onset field of instability reveal that such rims can substantially improve the thermo-magnetic stability of the superconducting films.",

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AU - Choi, Eun Mi

AU - Yurchenko, V. V.

AU - Johansen, T. H.

AU - Lee, Hyun Sook

AU - Lee, Jae Yeap

AU - Kang, Won Nam

AU - Lee, Sung Ik

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AB - An effective method for suppressing dendritic flux avalanches in MgB 2 films is demonstrated by coating the films with a metal rim along the edges, which is where the avalanches nucleate. The effect of the partial coating has been investigated by means of magneto-optical imaging on a series of samples with golden rims of different width. Measurements of the onset field of instability reveal that such rims can substantially improve the thermo-magnetic stability of the superconducting films.

UR - https://www.scopus.com/pages/publications/58149508087

U2 - 10.1088/0953-2048/22/1/015011

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VL - 22

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ER -

Suppression of dendritic flux jumps in MgB₂ films coated with a gold rim

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