Magnetic field influence

According to Konig and Kremer [44], the magnitude of the magnetic field has an influence on the magnetic susceptibility and consequently on the effective magnetic moment at low temperature. This applies for, 4-terms, such as 6A]g for Mn(II) complexes, as well as for T-terms, such as 4TXg for Co(II) complexes. 

It should be noted that the interpretation of the decrease of the effective magnetic moment at low temperature as an intermolecular antiferromagnetic interaction , giving rise to the negative Weiss constant 0 within the Curie-Weiss law, can be an artefact of mistaken ignorance of the non-linear magnetic behaviour. 

The field dependence of the magnetisation is better described by applying the polynomial magnetisation formula the M versus B function is fitted to a quadratic equation 

Evidently, the differential susceptibility deviates considerably from the Curie law at low temperature and a higher field. 

The mean and differential magnetic susceptibilities are compared in Fig. 8.31. Their difference becomes dramatic at low temperature the differential susceptibility approaches zero whereas the mean susceptibility retains a nonzero value. It is worth noting that at T = 4.2 K the difference may already be substantial. 

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Figure 8.6 shows the definition of transition temperature Tc and transition width Wc. To remark how the purity of the material and the magnetic field influence the two parameters, we will report hereafter the measurements of the superconducting transition of titanium samples of different purity and in the presence of different magnetic fields. The transitions of four Ti samples, whose characteristics are reported in Table 8.12, are shown in Fig. 8.7 where a change of only 0.2% in purity dramatically moves both the transition... 

Magnetic field influence on the sensitized photoconductivity may explain the nature of the electronic processes. It was shown that PEPC photoconductivity... 

Let us now consider the effect of the magnetic field on the current in the tunnel structure shown in Fig. 15(b). The external current is equal to the sum of currents through each junction. The magnetic field influences the phases of the currents through the upper and lower junctions in different ways. This results in the interference of currents. Without dwelling upon the details of the derivation [40], we present the final formula for the value of the total current... 

Nuclei that are close enough that their magnetic fields influence each other, resulting in spin-spin splitting, (p. 580)... 

As explained above, some approximations have been made. Firstly, a linear limit has been assumed, which implies that both Zeeman splittings of A and / are small compared to kT (see Eq. (175) and the bandwidth (see Eq. (178)). Another approximation, also designated as the "rigid shift approximation", assumes that the magnetic field influence on the lineshape can be neglected so that only a "rigid shift" is taken into consideration (Piepho and Schatz, 1983). 

The motion of high-density plasma in a magnetic field induces electric currents, which together with the magnetic field influence the plasma motion. Such phenomena can... 

In the framework of the Landau theory one can analyze the influence of a magnetic or an electric field on the phase symmetry and order parameters [17]. Here we consider the magnetic field influence on the temperature of the smectic A-C transition [11], Let the magnetic field is applied along the smectic layer normal. Then, it is sufficient to add the field term to the expansion (6.26). 

For many-electron systems a similar description can be given for the magnetic field influence. For the Zeeman effect we have... 

Speculate on the possible mechanism whereby a magnetic field influences the formation of scale. 

The process of the magnetic field influence on a developed turbulence was examined by [8],and demonstrated the possibility of using the quasi-stationary approximation for the solution of the second type problem and suggested to use quasi-linear approximations to solve the problem at Rcm = 20. One of the second type problem results were reported in [9], the modeling of a diminishing MHD turbulence by LES and DNS methods and demonstrated that the magnetic field at the initial time started to decay under the influence of the total kinetic energy. This effect is consistent with Joule dissipation. A similar picture of the decay was not reported by the authors because their main objective was the evaluation... 

As in energy-deficient systems in ECL, an external magnetic field influences the emission spectrum, as is demonstrated in the Wurster s Blue/4,4 -dimethyl-biphenyl system (Fig. 18). 

In addition to the electrostatic interactions of a nuclear charge with an atomic electron shell, there is also the interaction of a nuclear magnetic moment with a magnetic field created by an electronic shell at the point of nucleus location. Two phenomena appear simultaneously the electron shell creates a magnetic field at the point of nucleus location, and, on the other hand, the nuclear magnetic moment creates a magnetic field influencing the electron cloud. 

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