Multiferroicity and magnetoelectric coupling in the paramagnetic state of the metal-organic framework (CH3)2NH2Ni(HCOO)3.

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Summary of "Multiferroicity and magnetoelectric coupling in the paramagnetic state of the metal-organic framework (CH3)2NH2Ni(HCOO)3."

The metal-organic framework [(CH3)2NH2]Ni(HCOO)3 (DMA-Ni) has an ABX3 perovskite-like structure. At TC ~ 181 K, DMA-Ni displays a first-order ferroelectric transition, which is triggered by the disorder-order transition of hydrogen bonds. In addition, this compound exhibits a spin-canted antiferromagnetic order below TN ~ 37.6 K through the long-distance superexchange interaction, and a spin-reorientation transition appears near 15 K. The coexistence of magnetic and ferroelectric orders at low temperature testifies the multiferroic properties of DMA-Ni. Besides, the magnetoelectric (ME) coupling exists in the paramagnetic state, where the ferroelectric polarization can be modified by applying high magnetic fields. This behavior is attributed to the local magnetostriction effect.


Journal Details

This article was published in the following journal.

Name: Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X


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