Dendritic flux patterns in MgB2 films

T. H. Johansen; M. Baziljevich; D. V. Shantsev; P. E. Goa; Y. M. Galperin; W. N. Kang; H. J. Kim; E. M. Choi; M. S. Kim; S. I. Lee

doi:10.1088/0953-2048/14/9/319

Dendritic flux patterns in MgB₂ films

T. H. Johansen, M. Baziljevich, D. V. Shantsev, P. E. Goa, Y. M. Galperin, W. N. Kang, H. J. Kim, E. M. Choi, M. S. Kim, S. I. Lee

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

87 Scopus citations

Abstract

Magneto-optical studies of a c-oriented MgB₂ film with a critical current density of 10⁷ A cm^-2 demonstrate a breakdown of the critical state at temperatures below 10 K. Instead of conventional uniform and gradual flux penetration in an applied magnetic field, we observe an abrupt invasion of complex dendritic structures. When the applied field subsequently decreases, similar dendritic structures of the return flux penetrate the film. The static and dynamic properties of the dendrites are discussed.

Original language	English
Pages (from-to)	726-728
Number of pages	3
Journal	Superconductor Science and Technology
Volume	14
Issue number	9
DOIs	https://doi.org/10.1088/0953-2048/14/9/319
State	Published - Sep 2001
Externally published	Yes

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title = "Dendritic flux patterns in MgB2 films",

abstract = "Magneto-optical studies of a c-oriented MgB2 film with a critical current density of 107 A cm-2 demonstrate a breakdown of the critical state at temperatures below 10 K. Instead of conventional uniform and gradual flux penetration in an applied magnetic field, we observe an abrupt invasion of complex dendritic structures. When the applied field subsequently decreases, similar dendritic structures of the return flux penetrate the film. The static and dynamic properties of the dendrites are discussed.",

author = "Johansen, \{T. H.\} and M. Baziljevich and Shantsev, \{D. V.\} and Goa, \{P. E.\} and Galperin, \{Y. M.\} and Kang, \{W. N.\} and Kim, \{H. J.\} and Choi, \{E. M.\} and Kim, \{M. S.\} and Lee, \{S. I.\}",

year = "2001",

month = sep,

doi = "10.1088/0953-2048/14/9/319",

language = "English",

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journal = "Superconductor Science and Technology",

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TY - JOUR

T1 - Dendritic flux patterns in MgB2 films

AU - Johansen, T. H.

AU - Baziljevich, M.

AU - Shantsev, D. V.

AU - Goa, P. E.

AU - Galperin, Y. M.

AU - Kang, W. N.

AU - Kim, H. J.

AU - Choi, E. M.

AU - Kim, M. S.

AU - Lee, S. I.

PY - 2001/9

Y1 - 2001/9

N2 - Magneto-optical studies of a c-oriented MgB2 film with a critical current density of 107 A cm-2 demonstrate a breakdown of the critical state at temperatures below 10 K. Instead of conventional uniform and gradual flux penetration in an applied magnetic field, we observe an abrupt invasion of complex dendritic structures. When the applied field subsequently decreases, similar dendritic structures of the return flux penetrate the film. The static and dynamic properties of the dendrites are discussed.

AB - Magneto-optical studies of a c-oriented MgB2 film with a critical current density of 107 A cm-2 demonstrate a breakdown of the critical state at temperatures below 10 K. Instead of conventional uniform and gradual flux penetration in an applied magnetic field, we observe an abrupt invasion of complex dendritic structures. When the applied field subsequently decreases, similar dendritic structures of the return flux penetrate the film. The static and dynamic properties of the dendrites are discussed.

UR - https://www.scopus.com/pages/publications/0035444702

U2 - 10.1088/0953-2048/14/9/319

DO - 10.1088/0953-2048/14/9/319

M3 - Article

AN - SCOPUS:0035444702

SN - 0953-2048

VL - 14

SP - 726

EP - 728

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 9

ER -

Dendritic flux patterns in MgB₂ films

Abstract

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