Fizika tverdogo tela, Volume 38

1996 American Institute absorption amplitude anisotropy antiferromagnetic approximation atoms axis band calculated centers coefficient components compounds constant corresponding curve decrease defects deformation density determined diagram dielectric dislocation displacement domain walls doped effect elastic electric field electron energy equation excitation exciton experimental ferroelectric ferromagnetic films frequency fullerene function impurity increases Institute of Physics intensity interaction investigated ions JETP lattice layer linear luminescence magnetic field measurements metal Moscow Mössbauer observed obtained optical orientation oxygen paramagnetic parameters peak permittivity Petersburg phase transition phonons Phys plane polarization polymer positronium potential pressure region resonance Röntgen Russia Submitted sample semiconductor shown in Fig single crystals solid solutions spectra spectrum spin structure studied superconducting superlattice surface Tela Leningrad Tela St temperature dependence tensor thermal thickness tion Tverd valence band values variation vector wave wave vector width x-ray