Effect of Sintering Additives (V2O5, B2O3, Bi2O3) On the Electrical Properties of Substituted Y-Type Hexagonal Ferrite, Ba2Co0.6Cu0.4Zn1.0Fe12O22

Abstract

The effects of B2O3, Bi2O3 and V2O5 sintering additives on sintering temperature, phase stability, microstructure and electromagnetic properties of Cu–Zn co-substituted Co2-Y ferrite (Ba2Co0.6Cu0.4Zn1.0Fe12O22) was investigated. The ferrite was synthesized by solid oxide route. The XRD result confirms the formation of pure phase at 1000oC. Ferrite with Bi2O3 additives showed better shrinkage and densification at 900°C, than B2O3 and V2O5; V2O5 additive had very little effect (less than 5%) on the sintering behavior when sintered at 900oC. However, the ferrite phase decomposed with an addition of 6 wt% V2O5, when fired at 1100oC . The higher sintering rate and lower sintering temperature was found in B2O3 and Bi2O3 added ferrites. There was very little densification in the case of undoped and V2O5 doped specimen when sintered at 900°C, while denser microstructure and increased grain growth were observed in the case of the higher B2O3 and Bi2O3 wt %-content samples.