Nonmagnetic state

Fig. 7.5 The hybrid NFE-TB band structure of fee and bee iron in the nonmagnetic state. The solid circles represent the first principles energy levels of Wood (1962). (From Pettifor (1970e).)...

Expanding eqn (8.34) to second order and using eqn (8.28), the nonmagnetic state is found to be unstable to antiferromagnetism if... 

Table 4.24. The equilibrium lattice constant (a ) of CaO and some transition-metal monoxides. The experimental values are given in the second column. The theoretical values of in the nonmagnetic state are given in the third column. The theoretical values of are also calculated for the ferromagnetic and antiferromagnetic states...

Uranium. The vaporization behavior of uranium and the uranium-oxygen system has been carefully analyzed, and well documented in Ref. 19. The earlier work before better instrumentation and good mass spectrometry was applied to the problem reflects the trouble with the U0(g) contribution, which is now properly understood the situation witn IJ is similar to but somewhat less severe than that alluded to above with Pa. The entropy of 12.00 for the solid shows the small-radius, highly f-bonded, nonmagnetic state of the room-temperature metal this value is plotted in Fig. 4. 

We begin by imagining a nonmagnetic state of, for example, an iron atom dissolved in copper or aluminum. There is a d resonance that occurs at the same energy for spin-up and spin-down electrons. The energy of that resonance is partly determined by the presence of the exchange energy from the resonant states of the same spin. We shall estimate that shift in terms of the parameter and then shall... 

The conclusions from the magnetic susceptibility measurements under pressure on the Sm monochalcogenides, TmTe and Ce are, (1) that the valence changes are reflected in the susceptibility behavior, and (2) if the R.E. ion is stable in an intermediate valence state, the low-temperature part of the susceptibility data is anomalous, indicative of nonmagnetic state if for one of the configurations the ground state is nonmagnetic. 

As the atomic number Z of the alloying element increases, the impurity d-band is shifted to lower energy (see Fig. 7.1), and sharp peaks of the LDOSs are formed (starting with Cr) in the vicinity of the low DOS in TiC near the Fermi energy, which results in stability of the nonmagnetic state for such systems. 

Figure 12.3 Stabilization of the magnetic and nonmagnetic states by CT mechanism in a radical pair. CT and no-bond structures are shown at the outermost with the electron spin configurations in SOMO, NHOMO, and NLUMO. The corresponding state-energy levels are given in the central part.

Figure5.4 Density of states versus energy for the two spin components. In the nonmagnetic states (a), the occupancy by spin-up and spin-down electrons is the same. In Pauli magnetism at absolute zero when a magnetic field is applied, the spin-down and spin-up electrons are moved away from each other, which leads to unparity in that the number of electrons with one type of...

Figure 5.5 Density of states in samples, such as dilute magnetic semiconductors that are heavily doped withTM elements causing band tailing. As in the case of Figure 5.4 electrons adjust their numbers to make the energies of spin-up and spin-down electrons to be equal at the Fermi level in the nonmagnetic state (a). The excess spin of the spin-up electrons in the magnetic state or with large magnetic field applied (b).

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