Effects of surfactants on the particle morphology and self-organization of Co nanocrystals

被引：45

作者：

Luna, C ^{[1
]}

Morales, MP ^{[1
]}

Serna, CJ ^{[1
]}

Vázquez, M ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2003年 / 23卷 / 6-8期

关键词：

magnetic nanoparticles; Hcp cobalt; magnetic properties; polyol process; surfactant;

D O I：

10.1016/j.msec.2003.09.165

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A synthesis method based in the principles of the so-called polyol process has been developed to prepare Co nanocrystals of 5, 8 and 20 average diameter. The influence of stabilizers, as oleic and lauric acids, on the morphology and the self-assembled aggregates of the final Co nanocrystals has been analysed, as well as on their magnetic properties. Rather spherical Co nanoparticles were obtained using oleic and lauric acid, respectively, with 8 and 5 nm in diameter and narrow particle size distribution. The lauric acid, having a shorter chain length, seems to be more effective in coating the particles. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1129 / 1132

页数：4

共 18 条

[1] Finite-size effects in fine particles: magnetic and transport properties [J].

Batlle, X ;

Labarta, A .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2002, 35 (06) :R15-R42

[2] EDDY-CURRENT METHOD FOR MEASURING THE RESISTIVITY OF METALS [J].

BEAN, CP ;

DEBLOIS, RW ;

NESBITT, LB .

JOURNAL OF APPLIED PHYSICS, 1959, 30 (12) :1976-1980

[3]

Dinega DP, 1999, ANGEW CHEM INT EDIT, V38, P1788, DOI 10.1002/(SICI)1521-3773(19990614)38:12<1788::AID-ANIE1788>3.0.CO

[4]

2-2

[5]

Dormann J.L., 1992, Magnetic properties of fine particles

[6]

Fievet F., 1989, M RS Bulletin, V74, P29, DOI [10.1557/S0883769400060930, DOI 10.1557/S0883769400060930]

[7] Magnetic nanoparticles [J].

Kodama, RH .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :359-372

[8] New aspects of nanocrystal research [J].

Liz-Marzán, LM ;

Norris, DJ ;

Bawendi, MG ;

Betley, T ;

Doyle, H ;

Guyot-Sionnest, P ;

Klimov, VI ;

Kotov, NA ;

Mulvaney, P ;

Murray, CB ;

Schiffrin, DJ ;

Shim, M ;

Sun, S ;

Wang, C .

MRS BULLETIN, 2001, 26 (12) :981-+

[9] Multidomain to single-domain transition for uniform Co80Ni20 nanoparticles [J].

Luna, C ;

Morales, MD ;

Serna, CJ ;

Vázquez, M .

NANOTECHNOLOGY, 2003, 14 (02) :268-272

[10] NEW MAGNETIC ANISOTROPY [J].

MEIKLEJOHN, WH ;

BEAN, CP .

PHYSICAL REVIEW, 1956, 102 (05) :1413-1414

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