Magnetization of solid helium-3 from 0.2 to 11 T

Abstract

We have used the depression of the ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ melting pressure with magnetic field to determine the magnetization of the ordered solid phases in the T=0 limit from 0.2 to 11 T. In the U2D2 phase we find that χ=(5.41±0.08)×${10}^{\mathrm{-}6}$ cgs, independent of field, while in the canted antiferromagnetic phase we are able to extrapolate the magnetization for the first time to full ferromagnetic alignment at ${\mathrm{H}}_{\mathrm{c}2}$=21.7±1 T. This field is of particular importance, as it is the only point in the ordered phases at which the results of mean-field theories, used to calculate physical properties from the Hamiltonian, become exact.