How does high electrical resistivity reduce eddy currents in ferrites?

In the context of materials science, high electrical resistivity is a critical property of ferrites that allows them to function effectively in high-frequency applications.12

Eddy currents are circular electrical currents induced within a conductive material by rapidly fluctuating magnetic fields. These currents are problematic because they dissipate energy as heat, leading to significant signal loss.12

Because ferrites possess high electrical resistivity, they inherently impede the flow of these induced currents. In the production of soft ceramic ferrites, this resistivity is further enhanced by oxidizing the grain boundaries during the manufacturing process, which creates resistive internal layers. By minimizing the occurrence of eddy currents, high resistivity enables ferrites to maintain efficiency in transformers, telecommunications equipment, and other high-frequency electronic devices where lower-resistivity metallic materials would suffer from excessive energy loss.132