Magnetoelastic properties of single-S, single-Qchromium

When new data for the elastic stiffness tensor of single-polarization, single–wave-vector chromium are combined with volume thermal expansion, the magnetic free energy is found to be a function of reduced temperature, T/$T_{\mathrm{N}}$; the dependence of the Néel temperature $T_{\mathrm{N}}$ on longitudinal strain is much stronger than on shear strain, and is linear in strain and nearly isotropic. Grüneisen parameters defined at and below $T_{\mathrm{N}}$ being roughly constant validates this single-parameter model.