Ba-ferrite에 소량의 TiO₂첨가는 보자력을 제외한 제반자성을 약화시켰다. 본 실험에서는 Ba-ferrite로 Ba0·5.6Fe₂O₃를 택했고 여기에 TiO₂를 0.3ω/0간격으로 1.8ω/0까지 첨가했다. 그러나 1.2ω/0 TiO₂의 경우에는 여자력 2,060gauss에서 최대자기에너지 0.96×10^6goe로서 TiO₂를 첨가하지 않은 경우와 비슷한 값을 보였다. 각각의 TiO₂첨가량에 있어서 가장 좋은 자성을 보이는 소결온도는 TiO₂함량 증가에 따라 낮아져서 1.2ω/0 TiO₂때 30℃가 낮아진 1,250℃였고 1.8w/o 때 1,2 40℃정도가 되었다. 이때 압분체에 대한 가압은 1.5ton/㎤이었고 소결시간은 모두 1시간으로 했다. 소결밀도는 TiO₂함량의 증가에 따라 증가했으나, 각 함량의 최적소결온도에서의 밀도는 TiO₂함량에 관계없이 비슷한 값(약 4.8g/㎤)을 보였다.

Effects of minute addition of titanium dioxide on sintering behavior and magnetic properties of barium ferrite were investigated. It was found that those additions weakened magnetic properties except coercive force. In case of 1.2ω/0 TiO₂, however, the ferrite exibited (BH)max=0.94×10^6 G·Oe at Br=2,060 gauss. These values are closely compared to those of barium ferrite without TiO₂. Ba0·5.6Fe₂O₃ was selected as barium ferrite and TiO₂ was added up to 1.8ω/0 by increment of 0.3w/o. The optimum sintering temperature way lowered as TiO₃ addition increased. It was 1250℃ for 1.2ω/0 TiO₂ addition, compared to 1280℃ without TiO₂. Sintering time was 1 hour and compacting pressure was 1.5ton/㎤. The density of sinterd pellet was increased with TiO₂ addition. The pellet density was about 4.8g/㎤ at optimun sintering temperature of each TiO₂ addition.