Effects of Al2O3 nano-particles on the irreversible properties of MgB2 superconductor

Kh A. Ziq; M. Shahabuddin; I. Ansari; A. F. Salem; K. Singh; H. Kishan

doi:10.1063/1.2776704

Effects of Al₂O₃ nano-particles on the irreversible properties of MgB₂ superconductor

Kh A. Ziq^*, M. Shahabuddin, I. Ansari, A. F. Salem, K. Singh, H. Kishan

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Magnetic measurements on MgB₂ superconductors doped with various concentration (0 < x < 0.6%) of Al₂O₃ nano-particles (∼20 nm) have been performed in the temperature range 4-40K and in a magnetic field of strength up to 9 Tesla. A significant increase in the irreversibility field (Hirr), critical current density (Jc) and remanent magnetization (M_R) have been obtained with increasing the concentration of the Al₂O₃ nano-particle. At low field we have observed large vortex instabilities (known as vortex-avalanche) associated with all doped samples characterized with high critical current density. Vortex avalanche effect is reduced with increasing temperature vanishing near 20K. The results are discussed in terms of local-vortex instabilities caused by doping of Al₂O₃ nano-particles.

Original language	English
Title of host publication	NANOTECHNOLOGY AND ITS APPLICATIONS
Subtitle of host publication	First Sharjah International Conference on Nanotechnology and Its Applications
Pages	143-146
Number of pages	4
DOIs	https://doi.org/10.1063/1.2776704
State	Published - 2007

Publication series

Name	AIP Conference Proceedings
Volume	929
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Keywords

Vortex instability
Vortex motion

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.2776704

Cite this

Ziq, K. A., Shahabuddin, M., Ansari, I., Salem, A. F., Singh, K., & Kishan, H. (2007). Effects of Al₂O₃ nano-particles on the irreversible properties of MgB₂ superconductor. In NANOTECHNOLOGY AND ITS APPLICATIONS: First Sharjah International Conference on Nanotechnology and Its Applications (pp. 143-146). (AIP Conference Proceedings; Vol. 929). https://doi.org/10.1063/1.2776704

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abstract = "Magnetic measurements on MgB2 superconductors doped with various concentration (0 < x < 0.6%) of Al2O3 nano-particles (∼20 nm) have been performed in the temperature range 4-40K and in a magnetic field of strength up to 9 Tesla. A significant increase in the irreversibility field (Hirr), critical current density (Jc) and remanent magnetization (MR) have been obtained with increasing the concentration of the Al2O3 nano-particle. At low field we have observed large vortex instabilities (known as vortex-avalanche) associated with all doped samples characterized with high critical current density. Vortex avalanche effect is reduced with increasing temperature vanishing near 20K. The results are discussed in terms of local-vortex instabilities caused by doping of Al2O3 nano-particles.",

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author = "Ziq, {Kh A.} and M. Shahabuddin and I. Ansari and Salem, {A. F.} and K. Singh and H. Kishan",

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Effects of Al₂O₃ nano-particles on the irreversible properties of MgB₂ superconductor. / Ziq, Kh A.; Shahabuddin, M.; Ansari, I. et al.
NANOTECHNOLOGY AND ITS APPLICATIONS: First Sharjah International Conference on Nanotechnology and Its Applications. 2007. p. 143-146 (AIP Conference Proceedings; Vol. 929).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Ziq, Kh A.

AU - Shahabuddin, M.

AU - Ansari, I.

AU - Salem, A. F.

AU - Singh, K.

AU - Kishan, H.

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AB - Magnetic measurements on MgB2 superconductors doped with various concentration (0 < x < 0.6%) of Al2O3 nano-particles (∼20 nm) have been performed in the temperature range 4-40K and in a magnetic field of strength up to 9 Tesla. A significant increase in the irreversibility field (Hirr), critical current density (Jc) and remanent magnetization (MR) have been obtained with increasing the concentration of the Al2O3 nano-particle. At low field we have observed large vortex instabilities (known as vortex-avalanche) associated with all doped samples characterized with high critical current density. Vortex avalanche effect is reduced with increasing temperature vanishing near 20K. The results are discussed in terms of local-vortex instabilities caused by doping of Al2O3 nano-particles.

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