Heavy magnetic phase diagram

Magnetic phase diagram for the heavy lanthanide metals... 

Fig. 13. Magnetic field vs. temperature phase diagram of single crystal PrFe4Pi2 with the magnetic fields applied along the (100) direction. The labels ODS and HFS refer to ordered state and heavy fermion state, respectively. The ordered state is probably due to quadrupolar ordering of the Pr 4f ground state. The solid and broken lines represent second-order and first-order phase boundaries, respectively (Aoki et al., 2002).

Because of their structural similarities, Gd alloys easily with all the other heavy lanthanide elements, R. These alloys transform from ferromagnets to incommensurate magnetically structured materials once the concentration of R exceeds a certain critical concentration x. We can use the phase diagram to predict these critical alloy concentrations. These are listed in Table 11 and are in good agreement with experimental values where known. 

Overall, the physical picture that emerges from the magnetic ordering phase diagram. Figure 38, links imequivocally the lattice parameters of the heavy... 

In the present section, we review the properties of the stoichiometric Ce compounds exhibiting competition between heavy-fermion superconductivity and long-range magnetic order. We shall not discuss the highly complex phase diagrams obtained in alloy systems. In addition, we summarize recent attempts at a theoretical description of the complex low-frequency dynamics resulting from the competition between Kondo effect and RKKY interaction. 

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