Dynamic studies of γ-Fe2O3 nanoparticle systems

被引：15
作者：
Spinu, L
Fiorani, D
Srikanth, H
Lucari, F
D'Orazio, F
Tronc, E
Noguès, M
机构：
[1] Univ New Orleans, AMRI, New Orleans, LA 70148 USA
[2] CNR, IC MAT, I-00010 Monterotondo, Italy
[3] Univ Aquila, Dipartimento Fis, INFM, I-67100 Laquila, Italy
[4] Univ Paris 06, LCMC, F-75252 Paris 05, France
[5] Univ Versailles, CNRS, LMOV, F-78035 Versailles, France
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷 / PART II期
关键词：
nanoparticles; non-linear susceptibility; interaction effects;
D O I：
10.1016/S0304-8853(00)00665-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dynamic properties of two series of samples of gamma -Fe2O3 nanoparticles (average diameter [D] = 4.7 and 8.3 nm), dispersed in a polymer, were investigated by means of linear and non-linear AC susceptibility measurements over a large frequency range (5 < <nu> < 10(4) Hz). The temperature and frequency dependence of both linear and non-linear susceptibilities was analysed for different degrees of dispersion of particles in the polymer, i.e. for different strengths of inter-particle interactions. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1927 / 1929
页数：3
相关论文
共 9 条
  • [1] Effect of interparticle interactions on the dynamical properties of γ-Fe2O3 nanoparticles
    Dormann, JL
    Spinu, L
    Tronc, E
    Jolivet, JP
    Lucari, F
    D'Orazio, F
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 183 (03) : L255 - L260
  • [2] A DYNAMIC STUDY OF SMALL INTERACTING PARTICLES - SUPERPARAMAGNETIC MODEL AND SPIN-GLASS LAWS
    DORMANN, JL
    BESSAIS, L
    FIORANI, D
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (10): : 2015 - 2034
  • [3] Dormann JL, 1997, ADV CHEM PHYS, V98, P283, DOI 10.1002/9780470141571.ch4
  • [4] From pure superparamagnetic regime to glass collective state of magnetic moments in γ-Fe2O3 nanoparticle assemblies
    Dormann, JL
    Cherkaoui, R
    Spinu, L
    Nogues, M
    Lucari, F
    D'Orazio, F
    Fiorani, D
    Garcia, A
    Tronc, E
    Jolivet, JP
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 187 (02) : L139 - L144
  • [5] Collective magnetic state in nanoparticles systems
    Fiorani, D
    Dormann, JL
    Cherkaoui, R
    Tronc, E
    Lucari, F
    D'Orazio, F
    Spinu, L
    Nogues, M
    Garcia, A
    Testa, AM
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 : 143 - 147
  • [6] JONSSON P, 1998, CONDMAT9812143
  • [7] Linear and cubic dynamic susceptibilities of superparamagnetic fine particles
    Raikher, YL
    Stepanov, VI
    [J]. PHYSICAL REVIEW B, 1997, 55 (22) : 15005 - 15017
  • [8] Relaxation under field of the zero-field-cooled magnetisation of γ-Fe2O3 nanoparticle assemblies
    Spinu, L
    Dormann, JL
    Noguès, M
    Tronc, E
    Jolivet, JP
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 : 64 - 66
  • [9] SPINU L, 2000, IN PRESS IEEE T MAGN
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