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. https://doi.org/10.22059/jesphys.2012.24846
MLA
Hamedpour Darabi, M., Noorafshan, M., & Dearing, J. "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
CHICAGO
Hamedpour Darabi, M., Noorafshan, M. & Dearing, J., "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
VANCOUVER
Hamedpour Darabi M., Noorafshan M., Dearing J. Frequency dependency of magnetic susceptibility in SP magnetite grains. JESP. 2012;38(1):1–9 (In Persian). doi: 10.22059/jesphys.2012.24846
