Quasi-elastic neutron scattering on gamma-Fe2O3 nanoparticles

被引：82
作者：
Gazeau, F
Dubois, E
Hennion, M
Perzynski, R
Raikher, Y
机构：
[1] UNIV PARIS 06,LAB PHYS CHIM INORGAN,F-75252 PARIS 05,FRANCE
[2] CEN,LAB LEON BRILLOUIN,GIF SUR YVETTE,FRANCE
[3] RUSSIAN ACAD SCI,URALS BRANCH,LAB KINET ANISOTROP FLUIDS,PERM 614061,RUSSIA
来源：
EUROPHYSICS LETTERS | 1997年 / 40卷 / 05期
关键词：
D O I：
10.1209/epl/i1997-00507-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetodynamics of ferrofluid gamma-Fe2O3 nanoparticles is studied by Quasi-Elastic Neutron Scattering between 10 K and 250 K in the frequency range 10(10)-10(12) Hz. We probe independently the precession of the core magnetic moment and surface spins fluctuations observed in a dissipative regime. These fluctuations slow down at low temperature leading to a frozen disorder of the surface layer.
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页码：575 / 580
页数：6
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