Predicting a Ferrimagnetic Phase of Zn2FeOsO6 with Strong Magnetoelectric Coupling
P. S. Wang, W. Ren, L. Bellaiche, and H. J. Xiang
TL;DR
This paper predicts that Zn2FeOsO6, a double perovskite, is a promising room-temperature multiferroic with strong magnetoelectric coupling, enabling electric field control of magnetism for spintronic applications.
Contribution
The study introduces Zn2FeOsO6 as a new multiferroic material with superior properties to BiFeO3, including room-temperature ferrimagnetism and switchable magnetization via electric fields.
Findings
Zn2FeOsO6 exhibits strong ferroelectricity at room temperature.
It shows ferrimagnetism with a switchable easy-plane magnetization.
Strong magnetoelectric coupling enables electric control of magnetic properties.
Abstract
Multiferroic materials, in which ferroelectric and magnetic ordering coexist, are of fundamental interest for the development of novel memory devices that allow for electrical writing and non-destructive magnetic readout operation. The great challenge is to create room temperature multiferroic materials with strongly coupled ferroelectric and ferromagnetic (or ferrimagnetic) orderings. BiFeO3 has been the most heavily investigated single-phase multiferroic to date due to the coexistence of its magnetic order and ferroelectric order at room temperature. However, there is no net magnetic moment in the cycloidal (antiferromagnetic-like) magnetic state of bulk BiFeO3, which severely limits its realistic applications in electric field controlled spintronic devices. Here, we predict that double perovskite Zn2FeOsO6 is a new multiferroic with properties superior to BiFeO3. First, there are…
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