Unveiling hidden ferrimagnetism and giant magnetoelectricity in polar magnet Fe2Mo3O8
- Rutgers Univ., New Brunswick, NJ (United States), Rutgers Center for Emergent Materials and Department of Physics and Astronomy
- Rutgers Univ., New Brunswick, NJ (United States), Rutgers Center for Emergent Materials and Department of Physics and Astronomy; New Jersey Institute of Technology, Newark, NJ (United States), Dept. of Physics
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.
- Research Organization:
- Rutgers Univ., Piscataway, NJ (United States); New Jersey Institute of Technology, Newark, NJ (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- FG02-07ER46382; FG02-07ER46402
- OSTI ID:
- 1624782
- Journal Information:
- Scientific Reports, Vol. 5, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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