DocumentCode
2941481
Title
Investigation of Negative Remanence in Cobalt Nanoparticles Fabricated by Laser Irradiation
Author
Yang, J. ; Kim, J. ; Yoon, K. ; Do, Y. ; Kim, C. ; Hong, J.
Author_Institution
Hanyang Univ., Seoul
fYear
2006
fDate
8-12 May 2006
Firstpage
464
Lastpage
464
Abstract
In this report, we have investigated negative remanence in Co nanoparticles (NP) system by using laser irradiation technique. Magnetization measurements performed on Co NP system show negative remanence taken at temperatures higher than 92 K. The observed negative remanence correlates to the blocking temperature of superparamagnetism. Although we have no clear explanation for negative remanence, this behavior is associated to the magnetic coupling characteristic between the superparamagnetic Co and antiferromagnetic CoO.
Keywords
cobalt; laser beam effects; magnetic particles; nanoparticles; remanence; superparamagnetism; Co; laser irradiation; nanoparticles; negative remanence; Cobalt; Magnetic field measurement; Magnetic hysteresis; Magnetic materials; Nanoparticles; Power lasers; Remanence; Saturation magnetization; Sputtering; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location
San Diego, CA
Print_ISBN
1-4244-1479-2
Type
conf
DOI
10.1109/INTMAG.2006.376188
Filename
4261897
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