Electrical control method tunes magnetic properties for next

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Published: 2026-09-22T17:40:39.970Z • Permanent link

Researchers at the Department of Physics and Chemistry at DGIST, led by Professor Jung-Il Hong, have successfully used current pulses to alter the spin configuration within a ferrimagnetic material, lowering its energy barrier to 1.15 meV. This breakthrough was announced on March 15th, 2023, at the annual meeting of the Materials Research Society in San Francisco, California. The research team employed a novel electrical control method to tune the magnetic properties of the ferrimagnetic material, paving the way for potential applications in spintronics and magnetic memory devices. According to Dr. Hong, the achievement marks a significant milestone in the development of spin-based technologies, which could revolutionize the field of electronics.

The research team's experiment involved applying short current pulses to the ferrimagnetic material, which caused a rapid change in its spin configuration. The pulses were generated using a high-speed electrical circuit and applied for a duration of just 10 picoseconds. The researchers observed a significant decrease in the material's energy barrier, which is a critical parameter in determining its magnetic properties. The achievement was confirmed through a series of measurements, including thermodynamic and transport properties experiments. Dr. Hong's team demonstrated that the electrical control method can be used to tailor the magnetic properties of ferrimagnetic materials, opening up new possibilities for spin-based technologies.

The research was supported by the Korea Foundation for Advanced Studies, which provided funding for the project. The team's findings were published in a recent issue of the journal Physical Review Letters. The research has significant implications for the development of spintronics and magnetic memory devices, which are critical components in modern electronics. The achievement is expected to spark further research in the field, with potential applications in areas such as data storage, magnetic sensors, and quantum computing.

The breakthrough in electrical control of ferrimagnetic materials has significant implications for the data storage industry. Companies such as Intel and Samsung, which are major players in the market, are already exploring the use of spin-based technologies for data storage. The achievement by Dr. Hong's team could provide a significant advantage to these companies, as it could enable the development of more efficient and reliable data storage devices. Research communities are also taking notice, with several institutions already announcing plans to invest in spin-based technologies. The achievement is expected to have a positive impact on the global economy, as it could lead to the development of new products and services that could drive growth and innovation.

The impact of the research is also expected to be felt in the fields of magnetic sensors and quantum computing. Spin-based technologies have the potential to provide significant advantages over traditional technologies in these areas. For example, spin-based sensors could provide higher sensitivity and faster response times, while spin-based quantum computers could enable more efficient and reliable quantum computing. The achievement by Dr. Hong's team is a significant step towards realizing these potential benefits, and could have a major impact on the development of these technologies.

The achievement by Dr. Hong's team is part of a larger trend towards the development of spin-based technologies. In recent years, researchers have made significant progress in the development of spintronics, including the creation of spin-based transistors and magnetic sensors. The achievement by Dr. Hong's team is significant because it provides a new tool for tailoring the magnetic properties of ferrimagnetic materials, which could enable the development of even more advanced spin-based technologies. The research is also part of a broader effort to explore the properties of ferrimagnetic materials, which have been the subject of intense research in recent years.