cobalt ferrite

例句：

1. 1. This material is used in the production of high-frequency electronic devices.
   这种材料用于生产高频电子设备。
2. 2. The cobalt-iron oxide has excellent magnetic properties and is widely used in industry.
   钴铁氧体具有优良的磁性能，广泛应用于工业领域。
3. 3. Cobalt-iron oxide is a versatile material that can be processed into various shapes and sizes.
   钴铁氧体是一种多功能材料，可以加工成各种形状和尺寸。