Vertical magnetic field-type

Figure 2-3. Magnetization versus applied magnetic field for a type I superconductor exhibiting a complete Meissner effect (perfect diamagnetism). Note that minus 4jtM is plotted on the vertical scale the negative value of M corresponds to diamagnetism. (From Kittel [18].)...

As follows from these equations vertical components of electrical and magnetic fields are absent in oscillations of magnetic and electrical types, respectively ... 

As was shown in Chapter 3, the electromagnetic field of the vertical magnetic dipole in a uniform medium can be described with the aid of the vertical component of the potential of the magnetic type only ... 

The electromotive force induced in a measuring coil of the probe is defined by the vertical component of magnetic field, H, which in accord with eq. 4.226 is expressed through the potential of the magnetic type, A, only. At the point with cylindrical coordinates r = r-Q, (/) = 0 and 2 = L for the magnetic field we have ... 

The discussion to this point has been limited to static electric and magnetic fields. However, molecules are often exposed to time-dependent fields, as for example in the interaction with electromagnetic radiation. Some of the properties introduced in this chapter, hke the frequency-dependent polarizabihty are generalizations to time- or frequency-dependent fields of the properties introduced in Chapters 4 and 5. Other spectral properties hke the vertical excitation energies, transition dipole moments and properties derived from them, are a completely different type of property as they cannot be defined as derivatives of the groimd-state energy. 

Fig. 23. Left Zero field spectra of polycrystalline DyAg at two temperatures within the paramagnetic regime. The Neel temperature is 60 K. The two spectra are shifted vertically for clarity. Right Temperature dependence of the relaxation rate A derived from fits of an exponential decay of polarization to spectra of the type shown in the left hand panel. Typical is the sharp rise on approach to the magnetic transition temperature. The line is a guide to the eye, but fits to a critical power law are often possible. After Kalvius et al. (1986).

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