AC Field Effects on Vortex Avalanches in Mg0.975Al0.025B2 Superconductors

A. F. Salem; K. A. Ziq; A. A. Bahgat

doi:10.1007/s13369-015-1603-3

AC Field Effects on Vortex Avalanches in Mg_0.975Al_0.025B₂ Superconductors

A. F. Salem^*, K. A. Ziq, A. A. Bahgat

^*Corresponding author for this work

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

Abstract

Magnetization measurements have been performed on Mg_1−xAl_xB₂ superconductors (x = 0.025) in the temperature range 4–35 K and in a magnetic field up to 9T using VSM. At low fields (< 2 T), large vortex instabilities (vortex avalanches) are observed in the doped samples. As the temperature increases, the positions of avalanches are shifted to lower fields. An external AC field has been applied to shake the vortices. Upon shaking, the positions of avalanches have been observed to shift to higher fields.

Original language	English
Pages (from-to)	2059-2062
Number of pages	4
Journal	Arabian Journal for Science and Engineering
Volume	40
Issue number	7
DOIs	https://doi.org/10.1007/s13369-015-1603-3
State	Published - 12 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015, King Fahd University of Petroleum and Minerals.

Keywords

AC field
Al doping
MgB
Vortex shaking

ASJC Scopus subject areas

General

Access to Document

10.1007/s13369-015-1603-3

Cite this

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title = "AC Field Effects on Vortex Avalanches in Mg0.975Al0.025B2 Superconductors",

abstract = "Magnetization measurements have been performed on Mg1−xAlxB2 superconductors (x = 0.025) in the temperature range 4–35 K and in a magnetic field up to 9T using VSM. At low fields (< 2 T), large vortex instabilities (vortex avalanches) are observed in the doped samples. As the temperature increases, the positions of avalanches are shifted to lower fields. An external AC field has been applied to shake the vortices. Upon shaking, the positions of avalanches have been observed to shift to higher fields.",

keywords = "AC field, Al doping, MgB, Vortex shaking",

author = "Salem, {A. F.} and Ziq, {K. A.} and Bahgat, {A. A.}",

note = "Publisher Copyright: {\textcopyright} 2015, King Fahd University of Petroleum and Minerals.",

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AU - Salem, A. F.

AU - Ziq, K. A.

AU - Bahgat, A. A.

PY - 2015/7/12

Y1 - 2015/7/12

N2 - Magnetization measurements have been performed on Mg1−xAlxB2 superconductors (x = 0.025) in the temperature range 4–35 K and in a magnetic field up to 9T using VSM. At low fields (< 2 T), large vortex instabilities (vortex avalanches) are observed in the doped samples. As the temperature increases, the positions of avalanches are shifted to lower fields. An external AC field has been applied to shake the vortices. Upon shaking, the positions of avalanches have been observed to shift to higher fields.

AB - Magnetization measurements have been performed on Mg1−xAlxB2 superconductors (x = 0.025) in the temperature range 4–35 K and in a magnetic field up to 9T using VSM. At low fields (< 2 T), large vortex instabilities (vortex avalanches) are observed in the doped samples. As the temperature increases, the positions of avalanches are shifted to lower fields. An external AC field has been applied to shake the vortices. Upon shaking, the positions of avalanches have been observed to shift to higher fields.

KW - AC field

KW - Al doping

KW - MgB

KW - Vortex shaking

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