Neutron Investigation of Temperature Effects in the Magnon Spectrum of Magnetite
Ž. DimitrijevićS. KraśnickiInstitute of Nuclear Physics, CracowH. RżanyInstitute of Nuclear Physics, CracowJelena TodorovićA. WanicInstitute of Nuclear Physics, Cracow
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Abstract The diffuse magnon scattering peaks connected with τ = (111) in magnetite are examined at a number of temperatures using neutrons with λ = 1.314 Å. The decrease in magnon energies at elevated temperatures is observed and compared with the theory of Mills et al. [10]. Pronounced temperature dependent asymmetry of the magnon low energy peak is found.
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