Using a Magnetic Property Measurement System (MPMS), we measure magnetic susceptibility continuously at frequencies from 0 to 1000 Hz for three different superparamagnetic (SP) grain sizes of magnetite (5nm, 7 nm and 10 nm) suspended in hydrocarbons (Ferrofluids). Our results confirm non-zero values of frequency-dependent susceptibility in the fine tail of nano-sized grains and provide new empirical data for the degree of interaction between SP grains (nano particles) affecting magnetic susceptibility and frequency-dependent susceptibility.
Hamedpour Darabi, M., Noorafshan, M., & Dearing, J. (2012). Frequency dependency of magnetic susceptibility in SP magnetite grains. Journal of the Earth and Space Physics, 38(1), 1-9. doi: 10.22059/jesphys.2012.24846
MLA
Mohamad Hamedpour Darabi; Maryam Noorafshan; Jan Dearing. "Frequency dependency of magnetic susceptibility in SP magnetite grains", Journal of the Earth and Space Physics, 38, 1, 2012, 1-9. doi: 10.22059/jesphys.2012.24846
HARVARD
Hamedpour Darabi, M., Noorafshan, M., Dearing, J. (2012). 'Frequency dependency of magnetic susceptibility in SP magnetite grains', Journal of the Earth and Space Physics, 38(1), pp. 1-9. doi: 10.22059/jesphys.2012.24846
VANCOUVER
Hamedpour Darabi, M., Noorafshan, M., Dearing, J. Frequency dependency of magnetic susceptibility in SP magnetite grains. Journal of the Earth and Space Physics, 2012; 38(1): 1-9. doi: 10.22059/jesphys.2012.24846
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