Could the shape of magnetic nanomaterials affect their magnetic properties?

What is it about?

In this work, iron oxide (Fe2O3) nanoparticles with various shapes were produced by means of a microwave-assisted method, with use of cost-effective and non-toxic chemicals. These particles were then annealed at different temperatures, i.e., 300C, 500C, and 800C, for 2 h in the presence of air. The results indicated that heated samples exhibited weaker magnetic properties than those of non-heated samples.

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Why is it important?

After investigation of different methods to synthesize magnetic nanoparticles (MNPs), finding methods to control their magnetic properties and to optimize their characteristics remains challenging.