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Updated: Sep 8, 2025
07:42
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
2.9K
Magneto-ionic Control of a Propagating Spin Reorientation Transition
Guillaume Bernard1, Xavier Lafosse1, Claudia Tataru1
1Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France.
Nano Letters
|July 29, 2025
Summary
Researchers developed a voltage-controlled method for manipulating magnetic textures, reducing energy use in spintronics devices. This innovation offers a new path for low-power magnetic memories and computing.
Area of Science:
- Spintronics
- Materials Science
- Nanoscience
Background:
- Mobile magnetic textures are key for advanced magnetic memories and neuromorphic computing.
- Current-based manipulation of these textures leads to high energy consumption.
Purpose of the Study:
- To demonstrate a voltage-driven method for controlling magnetic textures.
- To reduce energy consumption in spintronics devices for memory and computing applications.
Main Methods:
- Magneto-ionic gating was employed to control spin reorientation transitions (SRT).
- Gate voltage pulses were used to nucleate and propagate SRT across magnetic tracks.
- Electrical monitoring via the anomalous Hall effect was utilized.
Main Results:
- Successful nucleation and propagation of SRT using exclusively gate voltage pulses.
- SRT dynamics controlled in the submillisecond range with low energy consumption (64 pJ).
- Demonstrated nonvolatile intermediate states for analogue operations, mimicking synaptic functions.
Conclusions:
- Voltage-driven control of magnetic information carriers offers a new spintronics approach.
- This method significantly reduces energy costs compared to current-based techniques.
- Paves the way for designing low-power, multistate spintronics memories.
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