Observation of spontaneous ferroelectric polarization reversal in multiferroic Mn1-xNixW04 (x ≈ 0.16)

Young Sang Song, Jaiho Chung, Kwang Woo Shin, Kee Hoon Kim, In Hwan Oh

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Abstract

In this Letter, we report the effect of replacing Mn2+ ions with Ni2+on the ferroelectricity of multiferroic MnW04 single crystals. When the amount of substitution was close to 16%, the sign of ferroelectric polarization spontaneously became negative with respect to initial dc poling field at a few degrees below Tc. Neutron diffraction intensities revealed a sudden change in the underlying spiral spin ordering that occurred coincidentally with the observed sign reversal. This unusual behavior in zero magnetic fields suggests that strong competitions between the two different magnetic ions may provide an efficient route to manipulation of existing multiferroics.

Original languageEnglish
Article number252904
JournalApplied Physics Letters
Volume104
Issue number25
DOIs
Publication statusPublished - 2014 Jun 23

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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