- We present a muon-spin relaxation investigation of the Ising chain magnet Ca3 Co2-x Mnx O6 (0.95). We find dynamic spin fluctuations persisting down to the lowest measured temperature of 1.6 K. The previously observed transition at around 18K is interpreted as a subtle change in dynamics for a minority of the spins coupling to the muon that we interpret as spins locking into clusters. The dynamics of this spin fraction freeze below a temperature TSF.
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Spin freezing and dynamics in Ca3Co2-xMnxO6 (x approximate to 0.95) investigated with implanted muons: Disorder in the anisotropic next-nearest-neighbor Ising model
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