Tunable physical properties in Bi-based layered supercell multiferroics embedded with Au nanoparticles
Jianan Shen, Zihao He, Di Zhang, Ping Lu, Julia Deitz, Zhongxia Shang, Matias Kalaswad, Haohan Wang, Haohan Wang, Xiaoshan Xu, Haiyan Wang, Haiyan Wang
Abstract
(BAMO) as a multiferroic matrix and well dispersed plasmonic Au nanoparticles (NPs) and demonstrate that the Au nanoparticle morphology and the nanocomposite properties can be effectively tuned. Specifically, the Au particle size can be tuned from 6.82 nm to 31.59 nm and the 6.82 nm one presents the optimum ferroelectric and ferromagnetic properties and plasmonic properties. Besides the room temperature multiferroic properties, the BAMO-Au nanocomposite system presents other unique functionalities including localized surface plasmon resonance (LSPR), hyperbolicity in the visible region, and magneto-optical coupling, which can all be effectively tailored through morphology tuning. This study demonstrates the feasibility of coupling single phase multiferroic oxides with plasmonic metals for complex nanocomposite designs towards optically switchable spintronics and other memory devices.