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A new class of magnetic fluids: bmim[FeCl4] and nbmim[FeCl4] ionic liquids

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3 Author(s)
S. Hayashi ; Dept. of Chem., Univ. of Tokyo, Japan ; S. Saha ; H. Hamaguchi

The responses to a magnet of two room-temperature ionic liquids containing tetrachloroferrate(III) ions, 1-butyl-3-methylimidazolium tetrachloroferrate (bmim[FeCl4]) and 1-butyronitrile-3-methylimidazolium tetrachloroferrate (nbmim[FeCl4]) are compared. Although their magnetic susceptibilities are similar, the observed responses are distinct from each other, suggesting that the response is determined not only by the magnetic susceptibility but also by the other factors including density, viscosity, and surface tension. The two magnetic ionic liquids constitute a new class of magnetic fluids that hold many attractive physical properties for practical applications.

Published in:

IEEE Transactions on Magnetics  (Volume:42 ,  Issue: 1 )