磁赤铁矿纳米晶体的介观结构：制备、磁性及应用

Mesoscopic structures of maghemite nanocrystals: fabrication, magnetic properties, and uses.

作者信息

Pileni Marie-Paule, Ngo Anh-Tu

机构信息

Laboratoire des Matériaux Mésoscopiques et Nanomètriques, LM2N, Université Pierre et Marie Curie, UMR 7070, BP 52, 4 place Jussieu, 75005 Paris, France.

出版信息

Chemphyschem. 2005 Jun 13;6(6):1027-34. doi: 10.1002/cphc.200400574.

DOI:10.1002/cphc.200400574

PMID:15883995

Abstract

Mesoscopic structures made of maghemite (gamma-Fe2O3) nanocrystals with different coatings and shapes are described. They are controlled by a combination of van der Waals and magnetic dipolar interactions and their shapes are responsible for the collective magnetic response of the nanocrystals. It is shown that spherical gamma-Fe2O3 nanocrystals can be used as a mask to reproduce the mesoscopic structure on a silicon wafer.

摘要

描述了由具有不同涂层和形状的磁赤铁矿（γ-Fe2O3）纳米晶体构成的介观结构。它们由范德华力和磁偶极相互作用共同控制，并且它们的形状决定了纳米晶体的集体磁响应。结果表明，球形γ-Fe2O3纳米晶体可用作掩膜，以在硅片上复制介观结构。