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- W1665090437 abstract "The dispersion relation of excitations and the dynamic susceptibility χ( q ,ω) in the random antiferromagnets Rb 2 T x S 1- x F 4 and T x S 1- x F 2 ; T =Mn or Co and S =Mg, Zn, Co or Ni, are systematically studied by using a theory developed in I, Some bands of excitations, each of which lies between two single site excitation energies, are obtained in those substances. The line shape of χ( q ,ω) is shown to depend on both the separation of excitation energies and the relative intensity of those excitations which varies with wave vector q . Our results explain the observed scattering function S t ( q ,ω) fairly well in both the line shape and the dispersion relation of the energies at which peaks of S t ( q ,ω) occur. The nature of those excitations is also studied by calculating susceptibilities of individual ions." @default.
- W1665090437 created "2016-06-24" @default.
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- W1665090437 date "1980-11-15" @default.
- W1665090437 modified "2023-09-26" @default.
- W1665090437 title "Theory of Magnetic Excitations in Random Antiferromagnets. II. Spin Waves in Rb2TxS1-xF4andTxS1-xF2(T=Mn or Co andS=Mg, Zn, Co or Ni)" @default.
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- W1665090437 doi "https://doi.org/10.1143/jpsj.49.1731" @default.
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