Magneto-optical detection of the relaxation dynamics of alloy nanoparticles with a high-stability magnetic circular dichroism setup

被引：10
作者：
Cavigli, L.
Fernandez, C. de Julian
Gatteschi, D.
Gurioli, M.
Sangregorio, C.
Mattei, G.
Mazzoldi, P.
Bogani, L.
机构：
[1] Univ Florence, Dept Chem, INSTM, I-50019 Sesto Fiorentino, Italy
[2] Univ Padua, Dept Phys, I-35131 Padua, Italy
[3] Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期
关键词：
magneto-optics; nanoparticles; dynamics; alloys; magnetic circular dichroism;
D O I：
10.1016/j.jmmm.2007.03.103
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a versatile high-stability and high-sensitivity magneto-optical setup that allows transmission and reflection measurements at high fields and low temperatures. We apply the technique to measure the decay in time of the magnetization of highly monodisperse 3.3nm Co33Ni67 alloy nanoparticles embedded in a silica host. We demonstrate the possibility of observing the dynamics of the magnetization over a macroscopic timescale in dilute samples, where other techniques are unavailable. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：E798 / E801
页数：4
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