Hysteresis of magnetization

Figure 8.12 (a) XMCD detected hysteresis of magnetization for the thick layer sample TL1 (above) and the monolayer sample ML1 (below) on HOPG measured at 7 K. The inset shows the enlargement of the central part of both hysteresis, (b) XAS spectra at the M45 edge of Tb for ML1 with helicities parallel (I11,... 

Duty cycles limited by hysteresis of magnetic field... 

Excessive healing of magnetic cores, as a result of harmonic frequencies due to hysteresis and eddy current losses (equations (1.I2) and (1.13)). 

The synthesis of mononuclear molecular complexes, in which a single ion is wrapped by a shell of organic ligands, provides an alternative method for creating arrays of nearly isolated lanthanide spin qubits. The study of these materials was boosted by Ishikawa and coworkers [94] discovery of magnetic hysteresis in... 

The real part is the magnetic permeability whereas the imaginary part is the magnetic loss. These losses are quite different from hysteresis or eddy current losses, because they are induced by domain wall and electron-spin resonance. These materials should be placed at position of magnetic field maxima for optimum absorption of microwave energy. For transition metal oxides such as iron, nickel, and cobalt magnetic losses are high. These powders can, therefore, be used as lossy impurities or additives to induce losses within solids for which dielectric loss is too small. 

There is considerable interest in developing new types of magnetic materials, with a particular hope that ferroelectric solids and polymers can be constructed— materials having spontaneous electric polarization that can be reversed by an electric field. Such materials could lead to new low-cost memory devices for computers. The fine control of dispersed magnetic nanostructures will take the storage and tunability of magnetic media to new levels, and novel tunneling microscopy approaches allow measurement of microscopic hysteresis effects in iron nanowires. 

A plot of magnetization against an applied magnetic field displays a hysteresis loop, the two branches of which correspond to the magnetization and demagnetiza-... 

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