Introduction to Solid State Physics |
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Page 650
... F bands for several alkali halides : optical absorption versus wavelength for crystals which contain F centers . F Centers The simplest color center is an F center . The name comes from the German word for color , Farbe . We usually produce ...
... F bands for several alkali halides : optical absorption versus wavelength for crystals which contain F centers . F Centers The simplest color center is an F center . The name comes from the German word for color , Farbe . We usually produce ...
Page 652
Charles Kittel. + + - - Figure 12 F centers . An M center consists of two adjacent Figure 13 An R center consists of three adjacent F centers ; that is , a group of three negative ion vacancies in a [ 111 ] plane of the NaCl structure ...
Charles Kittel. + + - - Figure 12 F centers . An M center consists of two adjacent Figure 13 An R center consists of three adjacent F centers ; that is , a group of three negative ion vacancies in a [ 111 ] plane of the NaCl structure ...
Page 667
... F Center . ( a ) Treat an F center as a free electron of mass m moving in the field of a point charge e in a medium of dielectric constant € = n2 ; what is the 1s - 2p energy difference of F centers in NaCl ? ( b ) Compare from Table 2 the ...
... F Center . ( a ) Treat an F center as a free electron of mass m moving in the field of a point charge e in a medium of dielectric constant € = n2 ; what is the 1s - 2p energy difference of F centers in NaCl ? ( b ) Compare from Table 2 the ...
Contents
CRYSTAL STRUCTURE | 1 |
CRYSTAL DIFFRACTION AND THE RECIPROCAL LATTICE | 43 |
CRYSTAL BINDING | 95 |
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absolute zero absorption alkali halide alloy antiferromagnet applied field atoms axis boundary Brillouin zone calculated Chapter charge components conduction band conduction electrons crystal structure cubic density dielectric constant dielectric function diffraction dipole direction dislocation dispersion relation effective mass elastic electric field electron concentration electron gas energy gap equation equilibrium excited exciton experimental F center Fermi surface ferroelectric ferromagnetic Figure free electron frequency function given heat capacity hole impurity interaction ionic lattice constant lattice points low temperatures magnetic field magnetic moment magnon metal modes momentum motion nearest neighbors neutron normal nuclear optical orbital paramagnetic particle phase phonon Phys plane polarization positive potential primitive cell quantum reciprocal lattice vector region resonance result room temperature scattering semiconductor shown in Fig space specimen sphere superconducting theory thermal tion transition unit vacancy valence band velocity wavefunction wavelength wavevector x-ray