Abstract

The Fe₃O₄/CoFe₂O₄ nanoparticles with a core–shell structure with an average size of 5 nm have been obtained by codeposition from the iron and cobalt chloride solutions. An analysis of the magnetic properties of the obtained system and their comparison with the data for single-phase Fe₃O₄ (4 nm) and CoFe₂O₄ (6 nm) nanoparticles has led to the conclusion about a noticeable interaction between the soft magnetic (Fe₃O₄) and hard magnetic (CoFe₂O₄) phases forming the core and shell of hybrid particles.

中文翻译：

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核-壳型Fe 3 O 4 / CoFe 2 O 4纳米粒子的合成与磁性

摘要

通过共沉淀法从铁和氯化钴溶液中获得了具有核-壳结构平均尺寸为5 nm的Fe ₃ O ₄ / CoFe ₂ O ₄纳米颗粒。对所得系统的磁性进行分析，并将其与单相Fe ₃ O ₄（4 nm）和CoFe ₂ O ₄（6 nm）纳米粒子的数据进行比较，得出有关软质之间明显相互作用的结论。磁性（Fe ₃ O ₄）和硬磁性（CoFe ₂ O ₄）相形成混合粒子的核和壳。