Abstract
The discovery of magnetism-driven ferroelectricity has recently given new hope for multiferroic devices, but very low magnetic ordering temperature as well as negligibly small electric polarization in these systems are still a challenge. Here, we report a new collinear magnetic multiferroic, ( K) with a spontaneous electric polarization, C , much higher than the other known magnetic multiferroics. The high polarization value has been associated to the intrinsic spin ordering-driven broken symmetry and the high degree of antisite disorder present in the system, which are confirmed through dc magnetization measurements.
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