Ga-NMR local susceptibility of the kagome-based magnet SrCr9pGa(12-9p)O19. A high temperature study
Abstract
We report a high-T Ga-NMR study in the kagome-based antiferromagnetic compound SrCr9pGa12-9pO19 (.81≤ p≤ .96), and present a refined mean-field analysis of the high T local NMR susceptibility of Cr frustrated moments. We find that the intralayer kagome coupling is J=86(6) K, and the interlayer coupling through non-kagome Cr moments is J =69(7) K. The J/J=0.80(1) ratio confirms the common belief that the frustrated entity is a pyrochlore slab.
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