THERMODYNAMIC MAGNETIZATION DISCONTINUITY AT THE A-B TRANSITION IN SUPERFLUID HE-3

The difference between total thermodynamic magnetizations in the A and B phases of superfluid He-3 was measured at the equilibrium A-B trans ition temperature over the entire range of applicable magnetic fields at pressures from 0 to 27 bars. We present evidence that dynamic measu rements (NMR) only partially account for the thermodynamic magnetizati on changes in the superfluid. The present experiment also measures the nontrivial strong-coupling correction to the magnetic field coupling strength in the Landau-Ginzburg free energy.