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VOLUME 56 (1992) | ISSUE 3 | PAGE 148
Experimental study of the spin-wave spectrum of a Bi2CuO4 single crystal by the inelastic neutron scattering method
The spin-wave spectrum and the critical behavior of the sublattice magnetization of a Bi2Cu04 single crystal have been studied by the neutron-scattering method. The structural features of the spectrum have been explained theoretically on the basis of an effective spin Hamiltonian. The basic role of the four-spin interaction has been determined.