Figure 2.

Experimental data and the fitting curves using the Langevin function. Experimental data under a 5-Oe dc external field (open squares) and the fitting curves using the first-order Langevin function (dashed line) and the modified Langevin function (solid line). Inset (a) is a zooming in the temperature range of 350 to 360 K. Inset (b) is the temperature dependence of P2.

Zhong et al. Nanoscale Research Letters 2012 7:167   doi:10.1186/1556-276X-7-167
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