Comments on "Host Nuclear Resonance in a Spin-Glass:CuMn"

Abstract
New data on a higher concentration (∼1%) of Mn in Cu than that studied by MacLaughlin and Alloul exhibit fundamentally different behavior for TTc, where Tc10 K is the "spin-glass" transition temperature. In particular, we find evidence for a "frozen" configuration of Mn spins at T=1.6 and 4.2 K, in better accord with the muon-precession studies of Murnick et al.