Makale detayı · 2007
Preparation of nano scale magnetite Fe3O4 and its effects on the bulk Bi 2223 superconductors
- Yıl
- 2007
- ISSN
0094-243X- Tür
- conference-paper
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
İngilizce (OpenAlex)
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 (Jc) of the superconductor preserving the fraction of the high Tc phase Bi‐2223. Magnetite additions above 0.10 wt % decrease the critical parameters (Tc, Jc) and the fraction of the high Tc phase.
Konular
- Physics of Superconductivity and Magnetism
- Magnetic Properties and Synthesis of Ferrites
- Iron oxide chemistry and applications
Birincil konu Physics of Superconductivity and Magnetism