Thermal Physics |
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Page 55
... magnetic field tends to align the spins in competition with the temperature which tends to randomize the spin directions . The total magnetic moment of the system in thermal equilibrium at tem- perature 7 is given in this approximation ...
... magnetic field tends to align the spins in competition with the temperature which tends to randomize the spin directions . The total magnetic moment of the system in thermal equilibrium at tem- perature 7 is given in this approximation ...
Page 57
... field H , be zero be- cause there are always present local magnetic fields from the magnetic inter- action of the moments with each other . These local fields act to give a non- zero limit to H ,. If H1 = 104 gauss , H1 = 100 gauss ...
... field H , be zero be- cause there are always present local magnetic fields from the magnetic inter- action of the moments with each other . These local fields act to give a non- zero limit to H ,. If H1 = 104 gauss , H1 = 100 gauss ...
Page 367
... magnetic moment of the speci- men by M. We need only substitute in the results of Chapter 22 the mag- netic field H for the electric field E , and the magnetic moment m for the elec- tric moment p . The magnetization M replaces the ...
... magnetic moment of the speci- men by M. We need only substitute in the results of Chapter 22 the mag- netic field H for the electric field E , and the magnetic moment m for the elec- tric moment p . The magnetization M replaces the ...
Contents
AN ELEMENTARY SOLUBLE SYSTEM | 17 |
ENERGY OF THE MAGNETIC MODEL SYSTEM | 24 |
THE FUNDAMENTAL ASSUMPTION | 27 |
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Boltzmann bosons calculated Carnot cycle chemical potential classical regime closed system cm³ combined system concentration defined definition denote derivative diffusive contact dipole distribution function electric field electron energy levels ensemble entropy equal equation equilibrium ergs example expansion experimental Fermi energy Fermi gas Fermi-Dirac fermions Figure fluctuations flux fractional free energy free particle frequency gases given grand sum He¹ He³ heat capacity helium ideal gas law increase integral isothermal kinetic lattice liquid low temperature m₁ magnetic field magnetic moment molecule N₁ negative temperature number of accessible number of atoms number of particles occupied P₁ partition function photons plotted potential energy pressure probable configuration Problem properties quantity quantum number reservoir result Show solid spin excess superfluid system in thermal term thermal average thermal contact thermodynamic potential total number U₁ unit velocity versus volume white dwarf