Target Bubbles in Fe<sub>3</sub>Sn<sub>2</sub> Nanodisks at Zero Magnetic Field
Jin Tang, Lingyao Kong, Yaodong Wu, Weiwei Wang, Yutao Chen, Yihao Wang, Junbo Li, Yeong‐Ah Soh, Yimin Xiong, Mingliang Tian, Haifeng Du
Abstract
nanodisks using differential phase contrast scanning transmission electron microscopy. This magnetic configuration is transferred from a conventional magnetic vortex using a zero-magnetic-field warming process and is characterized by a series of concentric cylinder domains. We termed them as "target bubbles" that are identified as three-dimensional depth-modulated magnetic objects in combination with numerical simulations. Target bubbles have room-temperature stability even at zero magnetic field and multiple stable magnetic configurations. These advantages render the target bubble an ideal bit to be an information carrier and can advance magnetic target bubbles toward functionalities in the long term by incorporating emergent degrees of freedom and purely electrically controllable magnetism.