Magnetization behaviors of Fe3O4 nanoparticles studied by frequency-modulated magnetic force microscopy

被引：3

作者：

Li, Xiang ^{[1
,2
]}

Li, Zhenhua ^{[3
]}

Pan, Deng ^{[1
]}

Xiang, Zhen ^{[1
]}

Yoshimura, Satoru ^{[2
]}

Saito, Hitoshi ^{[2
]}

机构：

[1] Shanghai Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China

[2] Akita Univ, Fac Engn & Resource Sci, Ctr Geoenvironm Sci, Akita 0108502, Japan

[3] Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 125卷

基金：

中国国家自然科学基金;

关键词：

Nanoparticles; Magnetic materials; Frequency-modulated magnetic force microscopy (FM-MFM); AC magnetic field; HEADS;

D O I：

10.1016/j.matlet.2014.03.129

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe3O4 nanoparticles were synthesized through a sal-gel method. The structure and morphology features of the nanoparticles were characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), and high resolution magnetic force microscopy (HR-MFM). The magnetization behaviors of Fe3O4 nanoparticles were investigated by using the frequency-modulated magnetic force microscopy (FM-MFM). It was observed that the prepared individual nanoparticles were within 20 nm. The high resolution amplitude and phase images of the nanoparticles were obtained separately by using the FM-MFM technique with an AC magnetic field. The magnetic distribution of the individual nanoparticles (similar to 20 nm) was demonstrated by this technique. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：36 / 39

页数：4

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