抄録
Higher frequency adaptability has been required for electronic devices. It is well known that Z-type hexagonal ferrites can be used at higher frequency range compared by spinel-type ferrites. Then we applied hexagonal ferrites to multilayer chip inductors with Ag electrodes. Bi2O3 and CuO were added in order to lower the firing temperature. Bi2O3 segregated at grain boundaries and CuO mainly existed inside grains that was confirmed by TEM-EDX observation. The 1608 chip-inductors were made with the low firing temperature Z-type ferrites and they showed the XR cross point of 1.4 GHz.
