Structural Features and Magnetic Properties of Bentonite–Iron Oxide Composite Materials

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发表日期：

2024年11月1日

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M. N. Shipko,
A. V. Noskov,
M. A. Stepovich,
A. V. Agafonov,
O. V. Alekseeva,
D. N. Yashkova,
E. S. Savchenko

摘要

Abstract

A mixed magnetite–maghemite solid solution and a bentonite–iron oxide composite material are synthesized via chemical coprecipitation. It is found that the bentonite–iron oxides composite is characterized by considerably weaker residual magnetization and stronger coercive force than Fe₃O₄/γ-Fe₂O₃ powder. X-ray diffraction and Mössbauer spectroscopy data show that bentonite influenced structural features of the magnetite–maghemite in the composite.