Tailoring the magnetic properties of cobalt ferrite nanoparticles using the polyol process

Beilstein Journal of Nanotechnology

Romain Breitwieser^1¹  Malek Bibani^1²  Alex Aubert^2³ 

[1] ENS Paris Saclay, SATIE UMR CNRS 8029, 61 Avenue du Président Wilson, 94235 Cachan Cedex, France^2;Université Paris Diderot, Sorbonne Paris Cité, ITODYS UMR CNRS 7086^1;Université Paris Nord, Sorbonne Paris Cité, LSPM CNRS UPR-3407, 99, Av. J. B. Clément, 93430 Villetaneuse, France^3

关键词: cobalt ferrite;    magnetocrystalline anisotropy;    magnetostriction;    nanoparticle;    non-stoichiometry;    polyol process;   

DOI  :  10.3762/bjnano.10.116

学科分类：地球科学(综合)

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

Background: In extrinsically magnetoelectric materials made of two components, the direct magnetoelectric coupling arises from a mechanical strain transmission at the interface due to the shape change of the magnetostrictive component under an external magnetic field. Here, the size of the interface between the two components plays a crucial role. Therefore, the development of nanomaterials exhibiting large surface-to-volume ratios can help to respond to such a requirement. However, the magnetic nanoparticles (NPs) must be highly magnetostrictive and magnetically blocked at room temperature despite their nanometer-size. We describe here the use of the polyol process to synthesize cobalt ferrite (Co_xFe_3−xO₄) nanoparticles with controlled size and composition and the study of the relationship between size and composition and the magnetic behavior.

【 授权许可】

CC BY