## Proceedings of the International School of Physics "Enrico Fermi.", Volume 22N. Zanichelli, 1963 - Nuclear physics |

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Page 78

total free energy of this four-component system may be written as: (46) 0 = NApA

+ Na/iB + NCiuc + NDflD where (23) do (47) ^A^\3JT) ' etc., and where the

quantities [iA, fiB etc. are called the

A, B, ...

total free energy of this four-component system may be written as: (46) 0 = NApA

+ Na/iB + NCiuc + NDflD where (23) do (47) ^A^\3JT) ' etc., and where the

quantities [iA, fiB etc. are called the

**thermodynamic potentials**of the componentsA, B, ...

Page 79

Thus The virtual

of G* by varying the amount of a structure element separately. However, by

varying the amount of one structure element separately one leaves, as has

become ...

Thus The virtual

**thermodynamic potentials**f„ are defined as the specific increaseof G* by varying the amount of a structure element separately. However, by

varying the amount of one structure element separately one leaves, as has

become ...

Page 80

This means that the derivatives dGjdNq can be determined experimentally and

therefore have the meaning of a true

of the structure elements and the Ays of this set of building units the following ...

This means that the derivatives dGjdNq can be determined experimentally and

therefore have the meaning of a true

**thermodynamic potential**. Between the n,'sof the structure elements and the Ays of this set of building units the following ...

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absorption acceptor approximation assumed band edge band structure Brillouin zone calculated carrier centre charge Chem coefficient components compound concentration conduction band consider constant corresponding crystal curves cyclotron resonance degenerate density diffusion direct transition discussed donor doping effective mass electric field energy gap energy surfaces equation equilibrium example exciton experimental expression Faraday rotation foreign atoms free electron frequency germanium given hence holes imperfections impurity indium antimonide InSb interaction interband ionization ions Journ lattice levels linear liquid magnetic field matrix measurements melt mobility momentum obtained optical p-type phonon Phys potential pressure quantum range reciprocal lattice region samples scattering semiconductors shown in Fig spherical spin spin-orbit structure elements symmetry tensor theory thermodynamic thermodynamic potentials tion transverse valence band valley Voigt effect wave functions wave vector Zeeman effect zero zone