Evidence for charge mediated coupling in Fe-Ga/PMN-PT composite multiferroic

Autor:	Tortarolo, M., Goijman, D., Barral, M. A., Di Napoli, S., Martínez, A. A. Pérez, Ramírez, G., Sarmiento, A., Gómez, J., Zakharova, A., Bayram, S. E., Stramaglia, F., Vaz, C. A. F., Milano, J., Piamonteze, C.
Rok vydání:	2024
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	We present an experimental study of the magnetoelectric coupling (MEC) in the Fe-Ga/PMN-PT thin film multiferroic composite by means of x-ray magnetic circular dichroism (XMCD) and ferromagnetic resonance (FMR). Our measurements show evidence for a charge mediated coupling mechanism, suggested by the asymmetric magnetic remanence (M$_{rem}$) behaviour under opposite electric fields ($\pm$ E) and the asymmetric resonance field (H$_r$) in the FMR measurements. Also, the FMR measurements reveal a perpendicular magnetic anisotropy (PMA), that can be related to an interface charge effect. and it is tunable by E field. Ab initio calculations support the existence of a charge mediated coupling at the Fe-Ga/PMN-PT interface. Comment: 7 pages, 5 figures, Supplemental Material
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.04383 Zobrazit plný text záznamu View this record from Arxiv