Magnetic spectra

Quadrupole Shifts in High-Field Magnetic Spectra... 

One end of the lactone ring must be at position 1. This is apparent from the nuclear magnetic spectra of gibberellic acid and its derivatives (30). 

The T distribution is the generalization of the Poisson one that is also in use [73]. A detailed demonstration of its usefulness for interpretation of the low-frequency magnetic spectra of magnetic fluids (dispersions of nanosize ferroparticles) was given in Ref. 74. 

The theory was tested with the aid of an ample data array on low-frequency magnetic spectra of solid Co-Cu nanoparticle systems. In doing so, we combined it with the two most popular volume distribution functions. When the linear and cubic dynamic susceptibilities are taken into account simultaneously, the fitting procedure yields a unique set of magnetic and statistical parameters and enables us to conclude the best appropriate form of the model distribution function (histogram). For the case under study it is the lognormal distribution. 

This interaction leads to hyperfine splittings in atomic and molecular spectra. One particular term for this interaction is the Fermi contact term, which dominates chemical shifts in nuclear magnetic spectra and splittings in electron paramagnetic spectra ... 

The reaction of aqueous tetrafluoroboric acid with a methanolic suspension of (acetato)hydridotris(triphenylphosphine)ruthenium(II) leads to the precipitation of hydridotris(triphenylphosphine)ruthenium(II) cation as the fluoroborate salt.1 The cation has also been produced by the decomposition of the [RuH(P(C6H5)3)4]+ cation in dichloromethane solution.2 On the basis of proton magnetic spectra, a structure with one of the phenyl rings of one triphenylphosphine bound as an arene to the metal was proposed.2 This structure has been confirmed by both x-ray diffraction and 31P nmr spectra.1... 

Solvents DMSO, hexadeuterodimethylsulfoxide TFA, deuterotrifluoroacetic acid n.s.g., no solvent given. Proton magnetic spectra of more complex molecules are given in this reference. 

Table 3. Proton Nuclear Magnetic Spectra of Jnvenile Hormone III...

Table 4. Nnclear Magnetic Spectra of Juvenile Hormone III (CDCI3) [183]...

The magnetic properties of an alloy can be studied as a function of the temperature and concentration of the constituent metals. Order-disorder phenomena can be measured directly and compared with the thermal history and mechanical properties of the alloy. The statistical occupation of the first coordination sphere round the resonant atoms in binary alloys can be derived from magnetic spectra. 

Studies of the Ba2Zn2Fei2022 ferrites are complicated by the presence of at least six iron sublattices, resulting in very complex magnetic spectra [171]. Another complex system is BaCoi.7sFei6.25027 [172]. 

Haemoglobin cyanide is similar to the azide, although the low-temperature magnetic spectra are not as broad in this case because of longer relaxation times. The e.s.r. g-values were calculated by a reversal of the computation process for the azide, and simulation of the asymmetric spectrum at 77 K has been attempted [14]. 

The use of polarised magnetic spectra from Ru in iron metal for studies on time-reversal invariance, although extremely interesting, is beyond our present scope [21, 24, 25]. 

One of the best resolved Au magnetic spectra is that of Au2Mn at 4-2 K, which is illustrated in Fig. 16.28 [98]. The eight allowed lines for a I transition with E2 admixture are clearly shown, and the asymmetry in the spectrum is due to the presence of a quadrupole interaction (e qQ = 2-705(70) mm s ), which is directed perpendicular to the magnetic axis Httt = 1571 kG). An unusually large pressure dependence of the magnetic field was interpreted as due to the uncoiling of the spiral spin structure of the alloy. 

Magnetic spectra (Ml) rri HI2 nij—HI2 Angular independent term e= 90° Angular dependent term 45° 0°... 

Fig. 37. Magnetic spectra at the Fe K of TbFej, 26ATb/35AFe and 26ATb/10AFe multilayered structures, and Fe-metal (after Attenkofer et al. 1993).

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