Hydrothermal synthesis and microwave absorption properties of Fe3O4 nanocrystals

被引：139

作者：

Ni, Shibing ^{[1
]}

Lin, Shumei ^{[1
]}

Pan, Qingtao ^{[1
]}

Yang, Feng ^{[1
]}

Huang, Kai ^{[1
]}

He, Deyan ^{[1
]}

机构：

[1] Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 05期

关键词：

MAGNETIC-PROPERTIES; BARIUM FERRITE; BEHAVIOR;

D O I：

10.1088/0022-3727/42/5/055004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Well-dispersed Fe3O4 nanocrystals were synthesized by a simple hydrothermal method. The as-synthesized products were characterized by field emission scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, x-ray diffraction, vibrating sample magnetometer and vector network analysis. The complex permittivity and permeability of paraffin wax and Fe3O4 with different Fe3O4 volume fractions were measured to increase linearly with the increase in the volume fraction of Fe3O4. The magnetic loss was caused mainly by natural resonance, which is in good agreement with the Kittel equation results. When the matching thickness is 3 mm, the calculated reflection loss reaches a maximum value of -21.2 dB at 8.16 GHz with 30% volume fraction of Fe3O4.

引用

页数：5

共 20 条

[1]

BARTON DK, 1998, RADAR EVALUATION HDB

[2] Single-crystal dendritic micro-pines of magnetic α-Fe2O3:: Large-scale synthesis, formation mechanism, and properties [J].

Cao, MH ;

Liu, TF ;

Gao, S ;

Sun, GB ;

Wu, XL ;

Hu, CW ;

Wang, ZL .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (27) :4197-4201

[3] Microwave behavior of ferrites prepared via sol-gel method [J].

Giannakopoulou, T ;

Kompotiatis, L ;

Kontogeorgakos, A ;

Kordas, G .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 246 (03) :360-365

[4] Static and dynamic magnetic properties of spherical magnetite nanoparticles [J].

Goya, GF ;

Berquó, TS ;

Fonseca, FC ;

Morales, MP .

JOURNAL OF APPLIED PHYSICS, 2003, 94 (05) :3520-3528

[5] Microwave absorption in magnetic bilayers [J].

Kim, YY ;

Yu, SC ;

Min, SG ;

Rhee, JR .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 226 :515-517

[6] ON THE THEORY OF FERROMAGNETIC RESONANCE ABSORPTION [J].

KITTEL, C .

PHYSICAL REVIEW, 1948, 73 (02) :155-161

[7] Microwave. absorption of ferrite powders in a polymer matrix [J].

Kolev, S. ;

Yanev, A. ;

Nedkov, I. .

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 5, 2006, 3 (05) :1308-+

[8] THE MICROWAVE ABSORBING AND RESONANCE PHENOMENA OF Y-TYPE HEXAGONAL FERRITE MICROWAVE ABSORBERS [J].

KWON, HJ ;

SHIN, JY ;

OH, JH .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (10) :6109-6111

[9] Attractive microwave-absorbing properties of La1-xSrxMnO3 manganite powders [J].

Li, G ;

Hu, GG ;

Zhou, HD ;

Fan, XJ ;

Li, XG .

MATERIALS CHEMISTRY AND PHYSICS, 2002, 75 (1-3) :101-104

[10] Preparation and microwave absorption properties of barium ferrite nanorods [J].

Mu, Guohong ;

Chen, Na ;

Pan, Xifeng ;

Shen, Haigen ;

Gu, Mingyuan .

MATERIALS LETTERS, 2008, 62 (6-7) :840-842

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