Magnetite in mixture with metallic iron in indoor dust samples was examined using several magnetic analyses, thermomagnetic curves of the magnetic susceptibility and the induced magnetization vs. temperature, hysteresis loops, and first-order reversal curves. The study of the magnetic properties was supplemented by the analysis of chemical elements and electron microscopic observation. The meta...

Using minor hysteresis loops in the Stoner–Wohlfarth model allows describing experimental behavior of coercive force ferrihydrite nanoparticles with a change field amplitude. The description estimating parameters distribution magnetic anisotropy nanoparticles. best agreement fields estimated by different approaches is achieved for assumption uniaxial