DocumentCode
3532025
Title
Superparamagnetic fluctuation in magnetic nanoparticles: an approach to extremely slow relaxation
Author
Mamiya, H. ; Ohnuma, M. ; Nakatani, I. ; Furubayashi, T.
Author_Institution
National Inst. for Mater. Sci., Tsukuba, Japan
fYear
2005
fDate
4-8 April 2005
Firstpage
673
Lastpage
674
Abstract
A new approach to clarify, without a knowledge of the system´s initial and final states, the field-dependence of the extremely slow relaxation due to the superparamagnetic fluctuations is proposed. The procedure is subsequently applied to a typical magnetic nanoparticle assembly. This approach would prove to be helpful in studying current magnetic recording media approaching the thermal instability limit.
Keywords
fluctuations; magnetic particles; magnetic recording; magnetic relaxation; nanoparticles; remanence; superparamagnetism; field-dependence; magnetic nanoparticles; magnetic recording media; relaxation; superparamagnetic fluctuation; thermal instability; Cooling; Fluctuations; Hard disks; Magnetic analysis; Magnetic devices; Magnetic field measurement; Magnetization; Materials science and technology; Nanoparticles; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN
0-7803-9009-1
Type
conf
DOI
10.1109/INTMAG.2005.1463765
Filename
1463765
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