Using a resonant structure, we have established large pressure gradients in a magnetized indium antimonide (InSb) plasma. This produces diamagnetic current in the milliampere range. The magnetic field generated by the current is sensed with a small magnetic coil. The operating frequency is about 230 kHz with a power level on the order of 100 mW. The InSb is magnetized with a 1 T magnetic field produced with permanent magnets. We show good agreement between our experimental measurements and the expected diamagnetic current.
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