Abstract
The magnetic compound CuB2O4 exhibitssuccessive phase transitions. With decreasing temperature the phase transition occurs at T N = 21 K from the paramagnetic to the commensurate weakly ferromagnetic phase. Further, the second phase transition occurs at around T * ~ 10 K to the incommensurate helix phase. Just below T *, the magnetic soliton lattice has been found in a neutron diffraction experiment. In order to study the spin dynamics in such successive phase transitions an NMR experiment was performed on 11Bin a CuB2O4 single crystal. The NMR resultson the spin structure in the commensurate phase are discussed. Also a phenomenological understanding of the commensurate to incommensurate transition is discussed on the basis ofthe molecular- field approximation.
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Chiba, M. et al. (2006). NMR STUDYOFTHE SUCCESSIVE PHASE TRANSITIONS IN CuB2O4 . In: Franse, J., Eremenko, V., Sirenko, V. (eds) Smart Materials for Ranging Systems. NATO Science Series II: Mathematics, Physics and Chemistry, vol 226. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4646-4_5
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DOI: https://doi.org/10.1007/1-4020-4646-4_5
Publisher Name: Springer, Dordrecht
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