Re-entrant ferroelectricity and the multiferroic phase diagram of Mn1-xFexWO4

Details Re-entrant ferroelectricity and the multiferroic phase diagram of Mn1-xFexWO4 Re-entrant ferroelectricity and the multiferroic phase diagram of Mn1-xFexWO4

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11c3036c&link_type=abstract

New Journal of Physics, Volume 11, Issue 3, pp. 033036 (2009).

Physics

7

Scientific paper

We report the discovery of re-entrant ferroelectricity in the phase diagram of multiferroic Fe-substituted MnWO4. At zero magnetic field (H) the spin-spiral ferroelectric (FE) state is completely suppressed at Fe substitutions (x) exceeding 0.04. For x<0.04 a zero-field ferroelectric phase exists in a narrow temperature (T) range. This phase shows a re-entrant behavior at lower T above a critical magnetic field. The re-entrant FE transition is explored by polarization, dielectric constant, and magnetization measurements. The complete multiferroic x-T-H phase diagram of Mn1-xFexWO4 is derived.

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