LOW-FIELD PHASE BOUNDARIES OF BCC SOLID HE-4

The low-field phase boundaries of bcc solid He-3 at V=24.18 CM3 /mole were determined from isochoric pressure measurements. We clarified tha t the critical magnetic field B(N) of the transition line between the low-field and the paramagnetic phases was described as B(N) approximat ely square-root T(N)(0) - T(N)(B(N)) as a function of the critical tem perature T(N). The sharp kink at the triple point along the low-field phase boundary indicates that the transition between the high-field an d paramagnetic phases is first order near the triple point.