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
Batlle, X
Labarta, A
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2002, 35 (06) : R15 - R42
[2] EDDY-CURRENT METHOD FOR MEASURING THE RESISTIVITY OF METALS
BEAN, CP
DEBLOIS, RW
NESBITT, LB
[J]. 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
Kodama, RH
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) : 359 - 372
[8] New aspects of nanocrystal research
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
[J]. MRS BULLETIN, 2001, 26 (12) : 981 - +
[9] Multidomain to single-domain transition for uniform Co80Ni20 nanoparticles
Luna, C
Morales, MD
Serna, CJ
Vázquez, M
[J]. NANOTECHNOLOGY, 2003, 14 (02) : 268 - 272
[10] NEW MAGNETIC ANISOTROPY
MEIKLEJOHN, WH
BEAN, CP
[J]. PHYSICAL REVIEW, 1956, 102 (05): : 1413 - 1414

← 1 2 →