0 Ga - NMR local susceptibility of the kagomé - based magnet SrCr 9 p Ga 12 − 9 p O 19 . A high temperature study
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چکیده
Ga-NMR local susceptibility of the kagomé-based magnet SrCr 9p Ga 12−9p O 19. A high temperature study. Abstract We report a high-T Ga-NMR study in the kagomé-based antiferromagnetic compound SrCr 9p Ga 12−9p O 19 (.81 ≤ p ≤ .96), and present a refined mean-field analysis of the local NMR susceptibility of Cr frustrated moments. We find that the intralayer kagomé coupling is J = 86(6) K, and the interlayer coupling trough non-kagomé 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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