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Magnetoelectric effect in a cubic ferrimagnetic spinel LiFe5O8 with high coupling temperature

Abstract

We report an effective magnetoelectric (ME) coupling phenomenon in cubic ferrimagnetic spinel LiFe5O8, with the command of its polarization by an applied magnetic field. A hysteretic response between magnetic field and electric polarization was observed. It is found that LiFe5O8 exhibits ME coupling that becomes significant at 250 K and increases with decreasing temperature. In contrast to many other spinel oxides that were reported to exhibit ME effect at very low temperatures (typically below 30 K), the bulk LiFe5O8 demonstrates a ME coefficient of 2 mV•Oe-1•cm-1 at 120 K. This material exhibits the highest ME coupling temperature among the magnetoelectric spinel and related materials so far reported. This ME effect is attributed to the ordered arrangement of magnetic ions (Fe3+) which are located in a noncentrosymmetric coordination environment. Our result provides a new venue to search for single-phase magnetoelectric materials with high coupling temperatures that could be used in potential technological applications.

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Publication details

The article was received on 08 Nov 2018, accepted on 08 Jan 2019 and first published on 09 Jan 2019


Article type: Paper
DOI: 10.1039/C8TC05615C
Citation: J. Mater. Chem. C, 2019, Accepted Manuscript
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    Magnetoelectric effect in a cubic ferrimagnetic spinel LiFe5O8 with high coupling temperature

    R. Liu, L. Pan, S. Peng, L. Qin, J. Bi, J. Wu, H. Wu and Z. Ye, J. Mater. Chem. C, 2019, Accepted Manuscript , DOI: 10.1039/C8TC05615C

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