Magnetic cluster

Figure Cl.1.5. Nickel cluster magnetic moment per atom (p) as a function of cluster size, at temperatures between 73 and 198 K. Apsel S E, Emmert J W, Deng J and Bloomfield L A 1996 Phys. Rev. Lett. 76 1441, figure 1.

Guidi, T. (2012) in Neutron Spectroscopy of Molecular Nanomagnets in Molecular Cluster Magnets (ed R.E.P. Winpenny), World Scientific. 

Structure of the Cluster Magnetic Moment and Magnetoresistance of a Cluster Ensemble. 

Inspection of the temperature dependence of the MCD bands of the oxidized and reduced [3Fe-4S] center in T. thermophilus ferredoxin, see Figure 3, reveals that the reduced cluster magnetizes more rapidly with decreasing temperature. This is shown more clearly in the magnetization data, which are shown as plots of MCD intensity, in the form of a percentage of that estimated... 

These observations in N-doped Mn and Cr clusters have relevance to the studies of the observed ferromagnetism in Mn- and Cr-doped GaN, as in these systems, it is possible that Mn and Cr atoms could cluster around N. Therefore, Curie temperatures could be enhanced since it is proportional to the square of the moment. Thus, one can expect that as an impurity (Mn or Cr) in GaN, the giant cluster magnets may play a significant role in the observed ferromagnetism in (Ga,Mn)N or (Ga,Cr)N semiconductors. 

EPR measurements show the existence of paramagnetic clusters, magnetic susceptibility data reveal magnetic moments indicative of fewer than one unpaired electron per cluster. Nine-atom 9" clusters also occur in binary phases, but tetrahedral four-atom 4 clusters are predominant beside the arachno-typs 5 clusters. 

Mclnnes EJL (2011) In Winpenny REP (ed) Molecular cluster magnets. World Scientific, Singapore... 

The dipolar shift results from a through-space interaction with a magnetically anisotropic cluster magnetic moment and is given by ... 

Of the f-electron metals that are ferromagnetic in the bulk (i.e. Gd, Tb and Dy), only Gd has been explored by DFT computations for cluster magnetism. In particular, computations... 

Figure 6.4 The component of the average cluster magnetization in the direction of...

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