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. Author manuscript; available in PMC: 2008 Sep 18.
Published in final edited form as: Chem Mater. 2007;19(6):1362–1368. doi: 10.1021/cm062626f

Figure 1.

Figure 1

The magnetic susceptibility is controlled by the extent of incorporation of a paramagnetic ion into a hydrogel. A) A set of CMC spheres was crosslinked with different relative concentrations of paramagnetic Ho3+ and diamagnetic La3+. The graph plots the inverse of the dot product of the magnetic field and its gradient against the mole fraction of Ho3+ cations. The inverse proportionality is linear, as predicted by equation 1. Error bars represent one standard deviation based on the data from seven measurements.