Magnetic ordering in RbGd3F10

Abstract The magnetic and thermal properties of RbGd3F10 are presented. This material forms in the cubic KY3F10 structure, which contains three non-equivalent sites for the magnetic rare earth ion, each with a tetragonal symmetry axis aligned along one of the three cubic axes. Magnetic exchange is antiferromagnetic. Ordering features are observed in both magnetic susceptibility and specific heat below 1.2 K. A ground state spin arrangement is predicted by minimizing the energy of the magnetic Hamiltonian at T=0.