If a product contains Fe, it can be attracted by a magnet. But not to attract other metals. Then this product does not have magnetic pressure
Magnetite: can be attracted by magnets. Iron oxide is not magnetic. Most of the magnetic materials are iron compounds, which is correct because the magnets are mostly mixtures.
The magnetic fields do not show magnetism when interacting with each other, but under the guidance of external forces (such as magnetic fields), the molecules are arranged in the same direction, showing magnetism, which is commonly called a magnet. Natural magnet is a kind of iron ore, its main component is Fe3O4, and its physical properties belong to crystal, so its internal molecular arrangement is regular, and the molecular current orientation is consistent, which leads to magnetism. Fe3O4 is a magnetic black crystal, commonly known as magnetite, is a complex oxide, in which 1/3 is Fe2+, 2/3 is Fe3+, Fe3O4 can be considered as a compound formed by FeO and Fe2O3. [the substance is Fe (FeO2) 2, ferrous iron]. Iron and iron oxide can be attracted by magnets. Cobalt and nickel can also be used. Iron oxide doesn't work
