Abstract:Weak bond disorder disrupts the expected spin-liquid ground-state of the ideal S = 1/2 Heisenberg pyrochlore antiferromagnet. Here we introduce a single crystal study of the structural and magnetic properties of the bond-disordered pyrochlore NaCdCo2F7. The magnetic susceptibility appears isotropic, with a large negative Curie-Weiss temperature (θCW = -108(1) K), however no magnetic order is observed on cooling until a spin-glass transition at Tf = 4.0 K. AC-susceptibility measurements show a frequency-depende… Show more
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