Phase Diagram and NMR Studies of Antiferromagnetically Ordered Polycrystalline Silver
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We have studied magnetic ordering in the frustrated antiferromagnetic spin-(1/2) system composed of the natural isotopic mixture of silver nuclei. The dynamic susceptibility of polycrystalline foils was measured down to about 0.5 nK (S0.4R In 2) using SQUID-NMR techniques. Two antiferromagnetic resonance branches were observed, which is consistent with ordering into a simple 1-k state. We obtain Tc= (560 ± 60) pK for the transition temperature at B = 0 and Bc = 100µT for the critical field extrapolated to T = 0.
|Number of pages||6|
|Publication status||Published - 15 Jul 1991|
|MoE publication type||A1 Journal article-refereed|