X phase of MnWO4: investigation of the new field induced ferroelectric cycloidal phase

image004Urcelay-Olabarria, E. Ressouche, A. A. Mukhin, V. Yu. Ivanov, A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, A. M. Balbashov, J. L. García-Muñoz, and V. Skumryev.

Phys. Rev. B 90, 024408 [10pp] (2014)  

We have identified this new FE phase as a reoriented cycloidal spin structure, AF2′, and its evolution from the AF2 phase has been thoroughly described. Unlike for the usual magnetic-field-induced spin-flop transitions, this high-field flopped phase does not directly develop from the low-field phase but emerges via the nonpolar collinear commensurate AF1 phase, which creeps in between.


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