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"Magnetic, Electrical, and Physical Properties Evolution in Fe3O4 Nanof" by Negin Ashrafi, Azmah Hanim Mohamed Ariff et al.

An investigation into the addition of different weight percentages of Fe3O4 nanoparticles to find the optimum wt.% and its effect on the microstructure, thermal, magnetic, and electrical properties of aluminum matrix composite was conducted using the powder metallurgy method. The purpose of this research was to develop magnetic properties in aluminum. Based on the obtained results, the value of density, hardness, and saturation magnetization (Ms) from 2.33 g/cm3, 43 HV and 2.49 emu/g for Al-10 Fe3O4 reached a maximum value of 3.29 g/cm3, 47 HV and 13.06 emu/g for the Al-35 Fe3O4 which showed an improvement of 41.2%, 9.3%, and 424.5%, respectively. The maximum and minimum coercivity (Hc) was 231.87 G for Al-10 Fe3O4 and 142.34 G for Al-35 Fe3O4. Moreover, the thermal conductivity and electrical resistivity at a high weight percentage (35wt%) were 159 w/mK, 9.9 × 10−4 Ω.m, and the highest compressive strength was 133 Mpa. ....

Aluminium Matrix Composite , Electrical Properties , Magnetic Iron Oxide Nanoparticles , Magnetic Properties , Powder Metallurgy , Thermal Properties ,

Study finds nickelate superconductors are intrinsically magnetic

Electrons find each other repulsive. Nothing personal – it’s just that their negative charges repel each other. So getting them to pair up and travel together, like they do in superconducting mate . ....

Jennifer Fowlie , Harold Hwang , Andreas Suter , Paul Scherrer Institute , Department Of Energy , Energy Sciences , Stanford Institute For Materials , University Of Geneva , Stanford University , National Accelerator Laboratory , Accelerator Laboratory , Nature Physics , Magnetic Properties ,