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A2T Ms 31
Chapter 1 The Nature of the Semiconducting State and the Semiconductor
Chapter 2 Magnetic Properties of Insulating Crystals
10 other sections not shown
absorption edge according antiferromagnetic approximation atomic spin c-electron calculations carrier concentration CdCr2Se4 charge carriers condition conduction band conduction electrons corresponding crystal Curie point decrease degenerate dependence doped effective mass elec electron density electron energy electron spin equal equation EuSe EuTe exchange integral exchange interaction exciton expression Fermi Fermi energy ferromagnetic ferron fluctuations FM ordering FM region follows formula Hamiltonian heavily-doped Heisenberg helicoidal Hence imperfections impurity indirect exchange insulating ions lattice magnetic atoms magnetic field magnetic ordering magnetic semiconductors magnetoresistance magnon magnon frequency maximum microregion minimum Nagaev E.L. neighbouring nonmagnetic nonzero number of electrons obtain operators optical orbit orders of magnitude parameter phase transition phonons Phys polarization polaron potential radius red shift result RKKY RKKY theory scattering specimen spectrum spin projection spinpolaron structure sublattice take into account temperature tion tron vector vicinity of Tc wave function Z-spins