Abstract

We have studied the magnetic properties of two-phase borosilicate glasses with matrices containing a mixture of β-Fe₂O₃ and Fe₃O₄ nanoparticles. The dimensions of the oxide nanoparticles are determined, and the temperature of blocking (T_B ~ 330 K) of the ensemble of superparamagnetic nanoparticles is estimated. It is also established that a sharp increase in the specific magnetization of these glasses when the Néel temperature is approached (and, below it, for bulk β-Fe₂O₃).

中文翻译：

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含β-Fe2 O 3和Fe 3 O 4纳米粒子的两相硼硅酸盐玻璃的磁性

摘要

我们研究的两相硼硅酸盐玻璃的磁特性与含有β-Fe的混合物的基质₂ ö ₃和Fe ₃ ö _4个纳米颗粒。的氧化物纳米颗粒的尺寸被确定，并且阻断（的温度Ť_乙超顺磁性纳米颗粒的系综的〜330 K）被估计。它也证实，在这些玻璃的特定的磁化急剧增加时，奈耳温度逼近（并且，在它下面，对散装β-的Fe ₂ ö ₃）。