We present an optically induced remanent photostriction in BiFeO3, resulting from the photovoltaic effect, which is used to modify the ferromagnetism of Ni film in a hybrid BiFeO3/Ni structure. The 75% change in coercivity in the Ni film is achieved via optical and nonvolatile control. This photoferromagnetic effect can be reversed by static or ac electric depolarization of BiFeO3. Hence, the strain dependent changes in magnetic properties are written optically, and erased electrically. Light-mediated straintronics is therefore a possible approach for low-power multistate control of magnetic elements relevant for memory and spintronic applications.
@article{arxiv.1609.01223,
title = {Optical Writing of Magnetic Properties by Remanent Photostriction},
author = {V. Iurchuk and D. Schick and J. Bran and D. Colson and A. Forget and D. Halley and A. Koc and M. Reinhardt and C. Kwamen and N. A. Morley and M. Bargheer and M. Viret and R. Gumeniuk and G. Schmerber and B. Doudin and B. Kundys},
journal= {arXiv preprint arXiv:1609.01223},
year = {2016}
}
Comments
Report on photopolarization effect in BiFeO3 used to write magnetic properties via the remanent photostriction