Ferromagnetic alloys are materials that exhibit strong magnetic properties due to the alignment of their atomic magnetic moments. Common examples include alloys of iron, nickel, and cobalt. These alloys can retain their magnetization even after an external magnetic field is removed, making them useful in various applications like permanent magnets and magnetic storage devices. The unique magnetic behavior of ferromagnetic alloys arises from their crystal structure and the interactions between their atoms. The presence of specific elements can enhance their magnetic properties, leading to improved performance in applications such as transformers, electric motors, and magnetic sensors.