Coexistence between moderately polarized ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ liquid and solid at pressures substantially below the melting curve persists for several minutes in high magnetic fields at low temperatures. This work, together with observations made in other laboratories, reveals that the relaxation time of the depression is strongly magnetic-field and temperature dependent. Analysis of the 8-T depression in which the cell-averaged polarization is near 65% favors an interpretation with equal polarizations for the liquid and solid rather than a model in which the equivalent fields for the two phases are equal.

• Received 23 May 1985

DOI:https://doi.org/10.1103/PhysRevLett.55.2949