Preparation of nano-scale magnetite Fe3O4 and its effects on the bulk bi-2223 superconductors

Date

2007-04-12

Author

Ghazanfari, N.
Kılıç, Adnan
Oezcan, S.
Soezeri, H.
Oezkan, H.
Gencer, A.

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Nano-scale magnetite (Fe3O4) powders were prepared from metallic iron and distilled water by wet milling technique. Magnetite powders so obtained were added to Bi1.6Pb0.4Sr2Ca2Oy superconductor by 0.00 0.05, 0.10 and 0.30 wt (x), with solid state reaction method. The structural and superconducting properties were studied by x-ray diffraction, transmission electron microscopy, magnetization and magnetic susceptibility measurements. Single-phase magnetite samples with average particle size about 25 nm were obtained with the wet milling technique. Nanoscale magnetite additions up to 0.10 wt % enhance the critical current density (J(c)) of the superconductor preserving the fraction of the high T, phase Bi-2223. Magnetite additions above 0.10 wt % decrease the critical parameters (T-c, J(c)) and the fraction of the high T-c phase.

Subject Keywords

Magnetite Fe3O4 nano-particles, TEM, Bi-2223, Critical current, AC susceptibility

URI

https://hdl.handle.net/11511/40228

DOI

https://doi.org/10.1063/1.2776702

Conference Name

1st Sharjah International Conference on Nanotechnology and Its Applications

Collections

Department of Computer Engineering, Conference / Seminar

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Citation Formats

N. Ghazanfari, A. Kılıç, S. Oezcan, H. Soezeri, H. Oezkan, and A. Gencer, “Preparation of nano-scale magnetite Fe3O4 and its effects on the bulk bi-2223 superconductors,” Sharjah, U ARAB EMIRATES, 2007, vol. 929, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40228.