Magnetic properties improvement in Fe3O4 nanoparticles grown under magnetic fields

被引：79

作者：

Wang, J ^{[1
]}

Zhang, K ^{[1
]}

Peng, ZM ^{[1
]}

Chen, QW ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Struct Res Lab, Hefei 230026, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2004年 / 266卷 / 04期

基金：

中国国家自然科学基金;

关键词：

X-ray diffraction; nanomaterials; magnetic materials;

D O I：

10.1016/j.jcrysgro.2004.03.034

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Magnetite nanoparticles have been synthesized under magnetic fields by the method of co-precipitation. The as-prepared samples were characterized by X-ray diffraction and transmission electron microscopy, and their magnetic properties were evaluated on a vibrating sample magnetometer. It is shown that the Fe3O4 samples produced by co-precipitation method under a magnetic field of 1 T have much higher saturation magnetization (15.3 emu/g) than that without magnetic field (6.59 emu/g). It is suggested that the well-crystallized Fe3O4 grains formed under magnetic fields should be responsible for the improved magnetic properties of nanosized Fe3O4 powders. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：500 / 504

页数：5

共 27 条

[1] CYLINDRICAL DOMAINS IN SMALL FERROMAGNETIC-SPHERES WITH CUBIC ANISOTROPY [J].

AHARONI, A ;

JAKUBOVICS, JP .

IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (02) :1892-1894

[2] Magnetic field effects on synthesis process of high-Tc superconductors [J].

Awaji, S ;

Ma, Y ;

Chen, WP ;

Maeda, H ;

Watanabe, K ;

Motokawa, M .

CURRENT APPLIED PHYSICS, 2003, 3 (05) :391-395

[3] The effect of Al-content and crystallinity on the magnetic properties of goethites [J].

Barrero, CA ;

Vandenberghe, RE ;

De Grave, E .

HYPERFINE INTERACTIONS, 1999, 122 (1-2) :39-46

[4] STUDY OF LOW-TEMPERATURE TRANSITION IN MAGNETITE AND INTERNAL FIELDS ACTING ON IRON NUCLEI IN SOME SPINEL FERRITES, USING MOSSBAUER ABSORPTION [J].

BAUMINGER, R ;

OFER, S ;

SEGAL, E ;

MARINOV, A ;

COHEN, SG .

PHYSICAL REVIEW, 1961, 122 (05) :1447-&

[5] Electrochemical growth of iron arborescences under in-plane magnetic field: Morphology symmetry breaking [J].

Bodea, S ;

Vignon, L ;

Ballou, R ;

Molho, P .

PHYSICAL REVIEW LETTERS, 1999, 83 (13) :2612-2615

[6] Size-dependent magnetic properties of MnFe2O4 fine particles synthesized by coprecipitation [J].

Chen, JP ;

Sorensen, CM ;

Klabunde, KJ ;

Hadjipanayis, GC ;

Devlin, E ;

Kostikas, A .

PHYSICAL REVIEW B, 1996, 54 (13) :9288-9296

[7] Raman and magnetization studies of barium ferrite powder prepared by water-in-oil microemulsion [J].

Chen, MS ;

Shen, ZX ;

Liu, XY ;

Wang, J .

JOURNAL OF MATERIALS RESEARCH, 2000, 15 (02) :483-487

[8]

Chiriac AP, 1996, J POLYM SCI POL CHEM, V34, P567, DOI 10.1002/(SICI)1099-0518(199603)34:4<567::AID-POLA2>3.0.CO

[9]

2-O

[10] TEXTURING OF MAGNETIC-MATERIALS AT HIGH-TEMPERATURE BY SOLIDIFICATION IN A MAGNETIC-FIELD [J].

DERANGO, P ;

LEES, M ;

LEJAY, P ;

SULPICE, A ;

TOURNIER, R ;

INGOLD, M ;

GERMI, P ;

PERNET, M .

NATURE, 1991, 349 (6312) :770-772

← 1 2 3 →