Re-analysing the phase sequence in Eu0.8Y0.2MnO3

Details Re-analysing the phase sequence in Eu0.8Y0.2MnO3 Re-analysing the phase sequence in Eu0.8Y0.2MnO3

2009-03-31

arxiv.org/abs/0903.5471v1

Physics

Condensed Matter

Materials Science

11 pages, 4 figures, submitted to Phys. Rev. Letters

Scientific paper

To clarify the controversy concerning the ferroelectricity of the lower temperature magnetic phases of Eu0.8Y0.2MnO3, hence its multiferroic character, we have studied in detail the temperature dependence of the electric polarization. The existence of a spontaneous polarization in 30K < T < 22K, provides clear evidence for the ferroelectric character of the re-entrant magnetic phase, stable in that temperature range. Both lower temperature magnetic phases allow easily-induced electric polarization, which actually mask any spontaneous polarization.

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