Abstract
Ferrimagnetic (SrM) is a mother phase for ferrite permanent magnets, which are commonly used due to its low cost compared to that of Nd-based permanent magnets and broader uses in permanent magnet markets. Recently, its electronic ground state has been debated. It has been proposed that the SrM is in a quantum paraelectric state in its single-crystal form, while polycrystalline SrM is a ferroelectric state. In this work, strain can stabilize ferroelectricity at room temperature, while keeping its ferrimagnetism. The strained SrM shows not only clear magnetic hysteresis but also as remnant polarization. From high-temperature thermal annealing, its crystallinity and ferroelectricity are even strengthened. Those are visualized by significant reduction in full width at half maximum of the rocking curve and in remnant polarization The results indicate this functionality can be discovered from old and well-known materials.
- Received 5 September 2023
- Revised 6 December 2023
- Accepted 12 January 2024
DOI:https://doi.org/10.1103/PhysRevMaterials.8.024401
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