Ferrimagnets are materials that exhibit a type of magnetism known as ferrimagnetism. In these materials, the magnetic moments of atoms align in opposite directions, but the opposing moments are unequal. This results in a net magnetic moment, allowing ferrimagnets to be magnetized and exhibit magnetic properties. Common examples of ferrimagnets include certain types of iron oxides and ferrites. These materials are often used in various applications, such as in magnetic recording media and transformers, due to their unique magnetic characteristics and ability to operate at high frequencies.