酸化物ガラスとフェライトの界面反応によるMn-Zn及びNi-Znフェライトの飽和磁気モーメントの変化

概要

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The change in the saturation magnetic moment of ferrite-glass mixtures has been investigated in relation to reactions at the interface between oxide glasses and ferrites. In mixtures of Mn-Zn ferrite and SiO_2-PbO or SiO_2-PbO-MO(M=Fe, Mn)glasses, it was established that as the temperature is increased above 500℃, the saturation magnetic moment decreases until reaching a minimum at about 800℃, but starts to increase again above 900℃. However, this pattern does not occur in mixtures containing SiO_2-PbO-ZnO and SiO_2-PbO-NiO glasses as the magnetic moment continues to decrease above 800℃. In contrast, the saturation magnetic moment of a mixture of Ni-Zn ferrite and SiO_2-PbO glass was found to slightly decrease at temperatures above 500℃ but then start to increase above 800℃. However, the magnetic moment of a mixture of Ni-Zn ferrite and SiO_2-PbO-FeO_<1.5> glass was seen to continuously increase at temperature up to the 1000℃ limit of our investigations. In mixtures of SiO_2-PbO-MO(M=Mn, Ni, Zn)glasses the magnetic moment was stable up to temperatures of 900℃, but showed significant increase at 1000℃. Conversely, the magnetic moment of a mixture containing SiO_2-PbO-ZnO glass only started to decrease at 1000℃.
社団法人日本セラミックス協会の論文
1997-09-01