Effects of small fields on the magnetic response of superconducting thin films of MgB2

W. A.C. Passos; P. N. Lisboa-Filho; W. N. Kang; Eun Mi Choi; Hyeong Jin Kim; Sung Ik Lee; W. A. Ortiz

Effects of small fields on the magnetic response of superconducting thin films of MgB₂

W. A.C. Passos
, P. N. Lisboa-Filho
, W. N. Kang
, Eun Mi Choi
, Hyeong Jin Kim
, Sung Ik Lee
, W. A. Ortiz

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

Abstract

Under the influence of a magnetic field applied perpendicularly to its plane, a superconducting thin film develops dendritic patterns of penetrated regions that coexist with Meissner areas. For a thin film of MgB₂ submitted to an alternate field of moderate amplitude, the AC susceptibility measured while cooling the sample exhibits a quite unusual behavior, reentering and fluctuating with temperature. The effect is more pronounced at frequencies around 1 kHz. Two plausible explanations for the effect are discussed.

Original language	English
Pages (from-to)	479-482
Number of pages	4
Journal	Journal of Superconductivity and Novel Magnetism
Volume	15
Issue number	5
State	Published - 2002
Externally published	Yes

Keywords

Dendritic patterns
Magnetic response
Superconducting films

Cite this

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title = "Effects of small fields on the magnetic response of superconducting thin films of MgB2",

abstract = "Under the influence of a magnetic field applied perpendicularly to its plane, a superconducting thin film develops dendritic patterns of penetrated regions that coexist with Meissner areas. For a thin film of MgB2 submitted to an alternate field of moderate amplitude, the AC susceptibility measured while cooling the sample exhibits a quite unusual behavior, reentering and fluctuating with temperature. The effect is more pronounced at frequencies around 1 kHz. Two plausible explanations for the effect are discussed.",

keywords = "Dendritic patterns, Magnetic response, Superconducting films",

author = "Passos, \{W. A.C.\} and Lisboa-Filho, \{P. N.\} and Kang, \{W. N.\} and Choi, \{Eun Mi\} and Kim, \{Hyeong Jin\} and Lee, \{Sung Ik\} and Ortiz, \{W. A.\}",

year = "2002",

language = "English",

volume = "15",

pages = "479--482",

journal = "Journal of Superconductivity and Novel Magnetism",

issn = "1557-1939",

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TY - JOUR

T1 - Effects of small fields on the magnetic response of superconducting thin films of MgB2

AU - Passos, W. A.C.

AU - Lisboa-Filho, P. N.

AU - Kang, W. N.

AU - Choi, Eun Mi

AU - Kim, Hyeong Jin

AU - Lee, Sung Ik

AU - Ortiz, W. A.

PY - 2002

Y1 - 2002

N2 - Under the influence of a magnetic field applied perpendicularly to its plane, a superconducting thin film develops dendritic patterns of penetrated regions that coexist with Meissner areas. For a thin film of MgB2 submitted to an alternate field of moderate amplitude, the AC susceptibility measured while cooling the sample exhibits a quite unusual behavior, reentering and fluctuating with temperature. The effect is more pronounced at frequencies around 1 kHz. Two plausible explanations for the effect are discussed.

AB - Under the influence of a magnetic field applied perpendicularly to its plane, a superconducting thin film develops dendritic patterns of penetrated regions that coexist with Meissner areas. For a thin film of MgB2 submitted to an alternate field of moderate amplitude, the AC susceptibility measured while cooling the sample exhibits a quite unusual behavior, reentering and fluctuating with temperature. The effect is more pronounced at frequencies around 1 kHz. Two plausible explanations for the effect are discussed.

KW - Dendritic patterns

KW - Magnetic response

KW - Superconducting films

UR - https://www.scopus.com/pages/publications/9744257755

M3 - Article

AN - SCOPUS:9744257755

SN - 1557-1939

VL - 15

SP - 479

EP - 482

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 5

ER -

Effects of small fields on the magnetic response of superconducting thin films of MgB₂

Abstract

Keywords

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