通过脉冲激光辐照制备的Fe3O4/FeO复合颗粒中交换偏置的控制。

Controlling exchange bias in Fe3O4/FeO composite particles prepared by pulsed laser irradiation.

作者信息

Swiatkowska-Warkocka Zaneta, Kawaguchi Kenji, Wang Hongqiang, Katou Yukiko, Koshizaki Naoto

机构信息

Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, 305-8565 Ibaraki, Japan.

出版信息

Nanoscale Res Lett. 2011 Mar 16;6(1):226. doi: 10.1186/1556-276X-6-226.

DOI:10.1186/1556-276X-6-226

PMID:21711758

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3211284/

Abstract

Spherical iron oxide nanocomposite particles composed of magnetite and wustite have been successfully synthesized using a novel method of pulsed laser irradiation in ethyl acetate. Both the size and the composition of nanocomposite particles are controlled by laser irradiation condition. Through tuning the laser fluence, the Fe3O4/FeO phase ratio can be precisely controlled, and the magnetic properties of final products can also be regulated. This work presents a successful example of the fabrication of ferro (ferri) (FM)/antiferromagnetic (AFM) systems with high chemical stability. The results show this novel simple method as widely extendable to various FM/AFM nanocomposite systems.

摘要

由磁铁矿和方铁矿组成的球形氧化铁纳米复合颗粒已通过一种在乙酸乙酯中进行脉冲激光辐照的新方法成功合成。纳米复合颗粒的尺寸和组成均由激光辐照条件控制。通过调节激光能量密度，可以精确控制Fe3O4/FeO相比例，最终产物的磁性也能得到调控。这项工作展示了制备具有高化学稳定性的铁（亚铁）（FM）/反铁磁（AFM）系统的成功范例。结果表明，这种新颖的简单方法可广泛扩展至各种FM/AFM纳米复合系统。