Curie temperature, ferromagnetism

Exact forms of a distance-dependent /( are not available. Before going into details, Table 5.4 lists the saturation magnetization Ms, the effective number of Bohr magnetons per atom, and the ferromagnetic Curie temperature Tc for selected ferromagnets. 

Table 5.4 Data for Ferromagnets Saturation Magnetization3 Ms Coercivity Hc, Effective Number of Bohr Magnetons per Atom neff( and Ferromagnetic Curie Temperature Tc...

Figure 8.7. Example of experimental data on a CMR material. The ferromagnetic Curie temperature for Lao.65(CaPb)o.35Mn03 is slightly higher than the NM-M transition temperature. (After Pickett and Singh (1996). American Institute of Physics. Reproduced with permission.)...

Heat capacities taken over the range 1.3°-20°K. 19) show an extremely narrow peak at 4.58 0.03 °K. at the EuSe ferromagnetic Curie temperature and one at 9.64 0.06 °K. in EuTe identified with the antiferromagnetic transition. The magnetic transition entropy increments are 4 and 3 cal./(mole °K.). 

For Cerium metal y = 0.013 J/(molK ) the free-ion moment of Ce is 2.14/% and 1 s = 2-54Hb-Tn is the Neel temperature except for CePdSb and CeRhjBj, where F indicates a ferromagnetic Curie temperature. 

Fig. 31. Magnetic phase diagram of the amorphous Gd, Al system. The freezing temperatures, ferromagnetic Curie temperatures and asymptotic Curie temperatures are indicated by means of 7, 7 and 0, respectively (after McGuire et al., 1978).

Fig. 36. Temperature dependence of the Dy turn angle as a function of T /T c, where Tc is the ferromagnetic Curie temperature. Shown are bulk Dy Gi e) a 400 A film (triangles) [DyjLu,] (inverted triangles) [Dy Lui2] (open circles) and [DyisILUis] (squares) and [Dy,4 U ] (solid circles).

Molecular ferromagnets. Shown are several structures which, when crystallized, form solids that are ferromagnets. Curie temperatures for each system are also given. 

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