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. Author manuscript; available in PMC: 2013 Aug 29.
Published in final edited form as: Phys Med Biol. 2009 Sep 9;54(19):L51–L55. doi: 10.1088/0031-9155/54/19/L01

Figure 3.

Figure 3

Temperature and calibration curves for Feridex excited at 4050 Hz. Temperature effects on saturation magnetization were corrected for using b = 2.8E-5 and a = 1.64. The ratio of the dc/ac magnetic field strength was kept constant at 0.46. The solid line is a quadratic fit to the magnetic field variation curve. The temperature range was 21–61 °C. Error bars represent the inaccuracy in static field measurement and inhomogeneity. Inset: comparison of reference temperature from thermometer and temperature measured using harmonic ratio. The line is an ideal fit.