Spin-canting in antiferromagnetic transition metal oxides originates from the competition of the Dzyaloshinskii-Moriya interaction and single-ion anisotropy with a relatively stronger superexchange interaction. Here we find canted antiferromagnetism in a disordered orthorhombic double perovskite, namely ${\mathrm{Pr}}_2{\mathrm{CrMnO}}_6$. The magnetic structure of ${\mathrm{Pr}}_2{\mathrm{CrMnO}}_6$ is investigated by performing structure, spectroscopy, dc magnetization, and temperature dependent neutron diffraction measurements. The dc magnetization measurements in combination with temperature dependent neutron diffraction measurements reveal a magnetic transition below 95 K, likely resulting from Cr-Mn ordering. Neutron diffraction confirms canted antiferromagnetic order below 95 K with a ground state canting angle of ${38}^{\circ }$ and significant structure-magnetism correlation around the magnetic transition temperature. The canted nature of Cr/Mn moments is attributed to Dzyaloshinskii-Moriya interaction and tilting of the Mn/Cr-${\mathrm{O}}_6$ octahedra, which determine the local easy axes of magnetization. Magnetocaloric studies reveal a second-order magnetic phase transition of the Cr-Mn sublattice at 95 K. The experimentally observed electronic and magnetic ground states are further supported by density functional theory calculations.

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• Antiferromagnetism
• Magnetic interactions
• Magnetic order
• Magnetocaloric effect
• Antiferromagnets
• Transition metal oxides
• Density functional calculations
• Magnetization measurements
• Neutron diffraction