## Calculation of the properties of vacancies and interstitials: proceedingsU.S. Dept. of Commerce, National Bureau of Standards; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1966 - Science - 202 pages |

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absorption alkali halides anharmonic approximation band Bloch functions Bloch waves Born-Mayer potential brackets indicate charge Chem coefficients configuration considered core defect calculations density determined dielectric dipole discussion displacement distance Doyama effective elastic constants equilibrium evaluated expression F-center f.c.c. lattice Fermi energy Fermi surface Figures in brackets force constants formation energy frequency Friedel germanium given Green's function H. B. Huntington Hamiltonian Hartree-Fock impurity atom indicate the literature integrals interatomic Koster-Slater equations lattice distortion Lidiard linear literature references localized mode M. P. Tosi mass matrix elements metals method migration energies Morse potential motion Mott-Littleton NaCl nearest neighbor obtained optical orbitals paper parameters perfect crystal perfect lattice perturbation phase shifts phonon Phys point defects polarizabilities problem properties pseudopotential region relaxation repulsive resonance response function Schottky defect Seeger Solids solution static symmetry theory tion valence vibrational volume Wannier functions wave function