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Growth of Stable Bilayer CrO/MgB Films by Pulsed Laser Deposition.

Authors :
Alzayed, N.
Soltan, S.
Shahabuddin, M.
El-Naggar, A.
Kityk, I.
Qaid, S.
Parakkandy, Jafar
Shah, M.
Madhar, Niyaz
Source :
Journal of Superconductivity & Novel Magnetism; Feb2015, Vol. 28 Issue 2, p387-390, 4p
Publication Year :
2015

Abstract

We have used the pulsed laser deposition (PLD) technique followed by post-annealing process with magnesium vapor at 700C for 30 min to grow a high-quality CrO/MgB bilayer prepared on AlO (1102) single crystal. The X-ray diffraction patterns showed high-quality orientated growth of MgB phase. The obtained films were approximately 300 nm thick and had lateral dimensions of 5×5 mm. SQUID magnetometry, magneto-optical Faraday microscopy, and magneto-transport techniques were used in order to measure the critical current density (J) that was found to be 7- 9×10 A/cm at 15 K. Transition temperature (T) for the films was ∼37 K. The obtained magnetic hysteresis loops at low temperatures exhibited asymmetry with respect to H = 0. This can be explained in terms of pinning of flux lines in the films due to magnetic interaction with the ferromagnetic CrO layer. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
15571939
Volume :
28
Issue :
2
Database :
Complementary Index
Journal :
Journal of Superconductivity & Novel Magnetism
Publication Type :
Academic Journal
Accession number :
100988117
Full Text :
https://doi.org/10.1007/s10948-014-2884-6