Selection of multiferroic monodomains in Mn2GeO4
Mn2GeO4 has recently emerged as a rare example of a magnetically-driven multiferroic (MF) material that exhibits spontaneous ferromagnetic and ferroelectric orders. Current experimental evidence suggests that these two orders are directly coupled, and we recently proposed a model for which the coupling is mediated by microscopic Dzyaloshinskii-Moriya interactions. Here we propose to test our proposed model by determining the relationship between the sign of the magnetization and that of electric polarization under various poling-field conditions. Monodomain MF states will be selectively created by using proper poling procedures involving both magnetic and electric fields, and subsequently be characterized by spherical neutron polarimetry using CRYOPAD installed onto either D3 or IN20. We expect that our results will provide a unique demonstration of the complete control of a MF state that stems from the rich magnetic structure underpinning the MF phase.
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WHITE Jonathan; CHAPON Laurent; ENDERLE Mechthild; HONDA Takashi; KENZELMANN Michel and KIMURA Tsuyoshi. (2012). Selection of multiferroic monodomains in Mn2GeO4. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-42-327
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