FIGURE 1.

Applied magnetic field protocols. The pulses have been measured using a calibrated loop sensor (VGTU, Vilnius, Lithuania), a DPO4034 oscilloscope (Tektronix, Beaverton, OR, United States), and a Gaussmeter 475DSP (Lakeshore, Carson, CA, United States), post-processed in OriginPro Software (OriginLab, Northampton, MA, United States).