AI Article Synopsis
- Charge-ordered rare-earth nickelates (RNiO3) exhibit strong multiferroic properties, meaning they can show both magnetic and electric polarization effects.
- Our findings from electronic structure calculations reveal that the ferroelectric polarization is closely linked to the material’s magnetic ordering, providing insight into its spin configuration.
- The research also suggests that different magnetic orderings can be influence and stabilized by applying an electric field while cooling the material, indicating a potential method for controlling these properties.
Article Abstract
We show that charge ordered rare-earth nickelates of the type RNiO3 (R = Ho, Lu, Pr and Nd) are multiferroic with very large magnetically-induced ferroelectric (FE) polarizations. This we determine from first principles electronic structure calculations. The emerging FE polarization is directly tied to the long-standing puzzle of which kind of magnetic ordering is present in this class of materials: its direction and size indicate the type of ground-state spin configuration that is realized. Vice versa, the small energy differences between the different magnetic orderings suggest that a chosen magnetic ordering can be stabilized by cooling the system in the presence of an electric field.
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| http://dx.doi.org/10.1103/PhysRevLett.103.156401 | DOI Listing |
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