Introduction to Solid State PhysicsProblems after each chapter. |
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Page 221
... entropy of a system of magnetic moments is lowered by a magnetic field . The entropy is always a measure of the order of a system ; the greater the disorder , the higher is the entropy . In the field the moments will be partly lined up ...
... entropy of a system of magnetic moments is lowered by a magnetic field . The entropy is always a measure of the order of a system ; the greater the disorder , the higher is the entropy . In the field the moments will be partly lined up ...
Page 222
... entropy which may be reduced by the application of a mag- netic field . We now derive an expression for the field dependence of the entropy . As the entropy is a function of H and T , we have ( 9.30 ) as as ds = = dH + d Ꭲ . ӘН / т ...
... entropy which may be reduced by the application of a mag- netic field . We now derive an expression for the field dependence of the entropy . As the entropy is a function of H and T , we have ( 9.30 ) as as ds = = dH + d Ꭲ . ӘН / т ...
Page 224
... entropy , is determined by the ratio gμBH / kT1 , provided that T100 and gμвH » koo . The entropy of the final state at tem- perature T2 will be the same function of k0o / kT2 as the initial entropy was of gμBH / kT1 , because the ...
... entropy , is determined by the ratio gμBH / kT1 , provided that T100 and gμвH » koo . The entropy of the final state at tem- perature T2 will be the same function of k0o / kT2 as the initial entropy was of gμBH / kT1 , because the ...
Contents
DIFFRACTION OF XRAYS BY CRYSTALS | 44 |
CLASSIFICATION OF SOLIDS LATTICE ENERGY | 63 |
ELASTIC CONSTANTS OF CRYSTALS | 85 |
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absorption acceptors alkali alloys approximately atoms axes axis barium titanate boundary Bragg Brillouin zone calculated chapter charge conduction band conduction electrons crystal structure cube cubic Curie point Debye density dielectric constant diffraction diffusion dipole direction discussion dislocation distribution domain effective mass elastic electric field energy equation equilibrium exciton experimental F centers factor Fermi ferroelectric ferromagnetic free electron frequency germanium given heat capacity hexagonal holes impurity interaction ionization ions lattice constant lattice point low temperatures magnetic field magnetic moment metals molecules motion nearest neighbor normal observed p-n junction paramagnetic particles phonons Phys physics plane polarizability polarization positive potential Proc resonance result room temperature rotation semiconductor Shockley shown in Fig sodium chloride solid solution space group specimen spin superconducting surface susceptibility symmetry Table theory thermal tion transistor transition unit volume vacancies valence band values vector velocity wave functions wavelength x-ray zero