Resonant X-ray Magnetic Diffraction of all-in-all-out antiferromagnetic order in Cd2Os2O7 Under Pressure

The pyrochlore structured Cd$_{2}$Os$_{2}$O$_{7}$ orders magnetically with spins on each Os tetrahedron arranged in either all-in or all-out geometries. Simultaneously, the system manifests a continuous metal-insulator transition at the N\'{e}el temperature of 227 K at ambient pressure. In an attempt to better understand the relationship between magnetism and electron localization, we explore the evolution of the antiferromagnetic order using pressure as the tuning technique and~resonant x-ray magnetic diffraction as the direct probe.~ Our diffraction results indicate that while the antiferromagnetic state is stable to above 30 GPa at T $=$ 4 K with a gradually suppressed intensity, the crystal lattice and its symmetry evolve.~