Room-temperature
Highly-Tunable Coercivity and Highly-Efficient
Multi-States Magnetization Switching by Small Current in Single 2D
Ferromagnet Fe3GaTe2
posted on 2024-01-02, 14:07authored byGaojie Zhang, Hao Wu, Li Yang, Wen Jin, Bichen Xiao, Wenfeng Zhang, Haixin Chang
The electrical control of coercivity and efficient magnetization
switching in 2D ferromagnetic crystals at room temperature are crucial
for next-generation 2D spintronics. However, known ferromagnetic systems
exhibit limited adjustability of coercivity at room temperature, and
electrically induced magnetization switching typically involves a
high critical current density and substantial power dissipation. Here,
we report the highly tunable coercivity and efficient multistate magnetization
switching at room temperature using a single 2D van der Waals (vdW)
ferromagnet Fe3GaTe2. The coercivity can be
adjusted to around 98.06% through the current application. Additionally,
the critical current density and power dissipation for magnetization
switching are impressively low, measuring around 7.31 × 105 A·cm–2 and 6.03 × 1013 W·m–3, respectively. This ultralow power
dissipation is 1–5 orders of magnitude lower than that observed
in other 2D ferromagnetic systems. Furthermore, multistate magnetization
switching is also realized at room temperature. The findings of this
study pave the way for electrical control of ferromagnetism at room
temperature and the practical implementation of vdW-integrated 2D
spintronics.