Magnetic susceptibility static

The static magnetic susceptibilities of the aligned CNTs with keeping tube s cylindrical direction parallel x and perpendicular x to the magnetic field were measured by SQUID as shown in Fig. 4 [31]. The CNTs are diamagnetic with... 

Fig. 4. Static magnetic susceptibility vs temperature. Nanotubes with the magnetic field perpendicular to the tubes (+), parallel to the tubes (o), unprocessed CNT-containing material (x) and planar graphite (solid line) [31],...

Fig. 7 Temperature dependence of the static magnetic susceptibility of (a) (EDT-TTFBr2)2 FeBr4 (b) (EDO-TTFBr2)2FeCl4 (c) (EDO-TTFBr2)2FeBr4 measured at an external field of B = 1 T after the core diamagnetic contributions are subtracted...

The static magnetic susceptibility of the synthetic pol uner shows what appears to be Curie-Weiss behavior, with a temperature dependence... 

Before the advent of ultraviolet photoelectron spectroscopy and ESCA, experimental evidence on the energy density was mainly available from static magnetic susceptibility and specific heat measurements (134). These provide information on the density of states at the Fermi level and it is impossible to base any conclusions on such experimental information with regard to the shapes of the d-bands in the alloys. It is currently believed that there is very little transfer of d-electrons between the atoms. If an increase in the number of d-electrons on a particular atom does occur, it is due to transfer of electrons from the s,p-band to the lower d-band. This is, of course, related to the difference in electronegativity of the alloying components (135a, 135b). 

Motional magnetism, caused by rotation, vibration or translation of charged particles will be ignored. Thus all diamagnetism aspects will enter only implicitly. Thus we will not focus on static magnetic susceptibility theory (e.g. magnetizability) or measurements. 

Static magnetic susceptibility is usually one of the first experiments to be performed in a new organic conductor. It can immediately provide information on its magnetic nature. Important information can also be extracted from the susceptibility on the nature of phase transitions which are common in quasi-one-dimensional organic conductors. 

The most convenient way to introduce the electric field is in terms of the vector potential A, by adding +e /c to the momentum operator in the Hamiltonian, with A chosen to give the field S = — (1/c) dA/dt = (ico/c)A. We shall use such an approach also when we compute the static magnetic susceptibility later, in Section... 

Figure 21 Temperature dependence of the dc electrical conductivity and the static magnetic susceptibility of MEM-(TCNQ)2. (Reproduced from S. Huizinga et ah. Quasi One-Dimensional Conductors II ed. S. Barisic et al., (Springer, Berlin, 1979) p. 45. Figs.

FIGURE 7 Temperature dependence of the static magnetic susceptibilities of... 

Fig. 9.20 The temperature dependence of half the effective energy gap, Aeff(T), of the (Fa)2PF6 crystal, computed from the temperature dependencies of the static magnetic susceptibility and the ESR intensity (ESR of the conduction electrons. From [29].

Research studies [160] conducted with static magnetic susceptibility and EPR spectroscopy methods have made it possible to define the distribution character of Cu(2 + ) ions fixed on polyethylene-graft-polyacrylic acid supports (PE-graft-PAA). 

It has been experimentally revealed that the p-T phase diagram includes two additional pseudo-boundary lines, T and To, as shown in fig. 2. The former was introduced initially as the line below which an energy gap seems to open up in flie spin excitation, while the To line was defined as the temperature at which the static magnetic susceptibility x exhibits a broad maximiun, Xiasx.- The x T curve was reported to be scaled well by Xmax... 

When the static magnetic susceptibility is measured, there are usually three contributions ... 

---