Unveiling hidden ferrimagnetism and giant magnetoelectricity in polar magnet Fe2Mo3O8
| Autor: | Yazhong Wang, Valery Kiryukhin, Kristjan Haule, G. L. Pascut, Sang-Wook Cheong, Bin Gao, Trevor A. Tyson |
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| Rok vydání: | 2015 |
| Předmět: |
Phase transition
Condensed Matter - Materials Science Multidisciplinary Materials science Magnetic moment Condensed matter physics Poling Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Article Magnetic field Ferrimagnetism Magnet 0103 physical sciences Polar 010306 general physics 0210 nano-technology |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Magnetoelectric (ME) effect is recognized for its utility for low-power electronic devices. Largest ME coefficients are often associated with phase transitions in which ferroelectricity is induced by magnetic order. Unfortunately, in these systems, large ME response is revealed only upon elaborate poling procedures. These procedures may become unnecessary in single-polar-domain crystals of polar magnets. Here we report giant ME effects in a polar magnet Fe2Mo3O8 at temperatures as high as 60 K. Polarization jumps of 0.3 μC/cm2 and repeated mutual control of ferroelectric and magnetic moments with differential ME coefficients on the order of 104 ps/m are achieved. Importantly, no electric or magnetic poling is needed, as necessary for applications. The sign of the ME coefficients can be switched by changing the applied “bias” magnetic field. The observed effects are associated with a hidden ferrimagnetic order unveiled by application of a magnetic field. |
| Databáze: | OpenAIRE |
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