Ferromagnetic transition temperature

Ce3Cu3Sb4 was found to be a semiconducting ferromagnet with ferromagnetic transition temperature, Tm = 10 T while GdTTitSh4 was reported to be a metallic antiferromagnet with 7n = 12K(Patil et al., 1996). 

We have measured the frequency-field dependence of the ESR signal between 30 MHz and 245 GHz. At high fields (Fig. 20) this relation is nearly linear at T=5 K, i.e., well below the ferromagnetic transition temperature [105]. This may be at first glance surprising, as in the magnetically ordered phase one would expect a nonlinear resonance field-resonance frequency relation. The answer to that came only later on from low-field ferromagnetic resonance data discussed in the next section. 

Most of the lanthanide and actinide elements, as well as the group III transition metals, combine with nitrogen to form hard materials with the roeksalt structure, although some of them are slightly nitrogen deficient [217. 218, 219. 220 j. Their magnetic behavior has been studied extensively, for example by neutron diffraction [221]. Brooks has calculated the electronic structures of the actinides with the roeksalt structure [222], In addition, most lanthanides and actinides form oxynitrides [223, 224], and their ferromagnetic transition temperatures can thus be tailored [225, 226],... 

Region exhibiting Curie-Weiss behavior. Ferromagnetic transition temperature. 

Fig. 46. Ferromagnetic transition temperature Tc, paramagnetic Curie temperature 0p as well as high field (xhf) and low field (xlf) susceptibility at 0 K in the Pr3Se4-Pr2Se3 system.

Fig. 47. Superconducting and ferromagnetic transition temperatures Tc (supercon.) and Tc (ferromagn.) as well as magnetic susceptibility at 0 K of Pr3Se4 La3Se4 mixed crystals versus composition.

C3H,NH3)2[CuCl4] single crystal a.c. two-dimensional Heisenberg ferromagnet (S=i) ferromagnetic transition temperature determined as 0q=7.61 K 69D6... 

When pressure is applied to the /S-phase crystal, it is found that the ferromagnetic transition temperature decreases [37-39]. As shown in Figure 15.27(a)-(f), the transition temperature as defined by the heat capacity peak decreases by about 40% as the pressure is increased up to 770 MPa. This means that the... 

As early as 1967, the chloride complex [FeCl(S2CNEt2)2] was shown to be a molecular ferromagnet (1253). Over the past 20 years a number of further studies have been carried out on the magnetism of this system (and the related bromide), most notably by De Fotis et al. (1254—1258). It has a ferromagnetic transition temperature of 2.457 K, while mixtures of [FeCl(S2CNEt2)2] and [FeBr(S2CNEt2)2] are characterized by transition temperatures of between 2.213 and 1.613 K (1255). 

The minimum in the ferromagnetic transition temperatures at H0...0, 25Er,o.75Rh4B4 was identified as a decoupled tetracritical point by Maekawa and Huang (1980). 

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