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Comparison of the Magnetic Properties for the Surface-Modified Magnetite Nanoparticles
- Authors
- Lee, Joonsik; Choa, Yong-Ho; Kim, Jongryoul; Kim, Ki Hyeon
- Issue Date
- Oct-2011
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- g factor; magnetite; magnetization; spin resonance; superparamagnetic
- Citation
- IEEE Transactions on Magnetics, v.47, no.10, pp.2874 - 2877
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Transactions on Magnetics
- Volume
- 47
- Number
- 10
- Start Page
- 2874
- End Page
- 2877
- ISSN
- 0018-9464
- Abstract
- The Fe3O4 nanoparticles were synthesized by a coprecipitation method, and their particles were capsulated by 3-thiopheneacetic acid (3TA), 2, 3-meso-dimercaptosuccinic acid (DMSA) and Polyethylene glycol (PEG), respectively. The 3TA-, PEG-, and DMSA-coated Fe3O4 nanoparticles are well dispersed in aqueous solution. The average particle sizes of the Fe3O4 and the 3TA-, PEG-, and DMSA-coated magnetite nanoparticles were exhibited approximately 10.4, 12, 11, and 12 nm by TEM results. The mean blocking temperatures of the uncoated Fe3O4 and the 3TA, PEG, DMSA surface-coated Fe3O4 nanoparticles exhibited about 245 +/- 10 K, 220 +/- 10 K, 142 +/- 12 K, and 200 +/- 10 K, respectively. The values of g factor of the uncoated Fe3O4 and the 3TA-, PEG-, and DMSA-coated Fe3O4 nanoparticles were obtained 2.22, 2.21, 2.22, and 2.19, respectively.
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Related Researcher
- Kim, Jong ryoul
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)