Target Bubbles in Fe₃Sn₂ Nanodisks at Zero Magnetic Field

Jin Tang; Lingyao Kong; Yaodong Wu; Weiwei Wang; Yutao Chen; Yihao Wang; Junbo Li; Y. Soh; Yimin Xiong; Mingliang Tian; Haifeng Du

doi:10.1021/acsnano.0c04036

journal article·2020-09-22

Target Bubbles in Fe₃Sn₂ Nanodisks at Zero Magnetic Field

Jin Tang, Lingyao Kong, Yaodong Wu, Weiwei Wang, Yutao Chen, Yihao Wang, Junbo Li, Y. Soh, Yimin Xiong, Mingliang Tian, Haifeng Du

ACS Nano· Volume 14· Issue 9

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Source abstract

Abstract

We report a vortex-like magnetic configuration in uniaxial ferromagnet Fe₃Sn₂ 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.

Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Nanomaterials

OpenAlex topics: Magnetic properties of thin films · Characterization and Applications of Magnetic Nanoparticles · Physics of Superconductivity and Magnetism

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences, and University of Science and Technology of China, Hefei, 230031, China

School of Physics and Materials Science, Anhui University, Hefei, 230601, China

Universities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, Hefei Normal University, Hefei, 230601, China

Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China

Paul Scherrer Institute, 5232, Villigen, Switzerland

Funding

the Natural Science Foundation of China · the Equipment Development Project of Chinese Academy of Sciences · the Key Research Program of the Chinese Academy of Sciences · the National Key R&D Program of China · the Strategic Priority Research Program of Chinese Academy of Sciences · the Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology · the Key Research Program of Frontier Sciences, CAS

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