Paramagnetism magnetic dipole moments

Example 6. For paramagnetic materials the magnetic susceptibility may be measured experimentally and used to give information on the molecular magnetic dipole moment, and hence on the electronic structure of the molecules in the material. The paramagnetic contribution to the molar magnetic susceptibility of a material, xm, is related to the molecular magnetic dipole moment m by the Curie relation... 

Paramagnetic solids are those in which some of the atoms, ions or molecules making up the solid possess a permanent magnetic dipole moment. These dipoles are isolated from one another. The... 

The magnetic dipole moment of a paramagnetic sohd containing paramagnetic atoms or ions will... 

For the transition metals, especially those of the 3d series, interaction with the surroundings is considerable. This has two important consequences. One is the curious fact that 3d transition metal ions in paramagnetic solids often have magnetic dipole moments corresponding only to the electron spin contribution, given by the quantum number S. The orbital moment, L, is said to be quenched . In such materials. Equation (12.8) reduces to... 

BO that only one electron remains unpaired, whereas the remaining four form two pairs, each with electrons of opposite spins the third possibility is that only two of the five electrons are paired and there remain three electrons with parallel spins. If the paramagnetic susceptibility should depend only on the electron spin, and orbital contributions of the electrons can be neglected, then according to quantum meohanics, the magnetic dipole moment, /t, expressed in Bohr magnetons, depends qpon the number, n, of unpaired electrons, as follows ... 

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