Ceramic ferrites are magnetic materials made from iron oxide combined with other metal oxides, such as barium or strontium. They are known for their high magnetic permeability and low electrical conductivity, making them ideal for applications in electronics, such as inductors and transformers. These materials are typically produced through a sintering process, where the powdered components are heated to form a solid structure. Ceramic ferrites are widely used in radio frequency applications and magnetic recording devices due to their ability to operate efficiently at high frequencies.