China Overtakes U.S. in Race for Powerful Tesla Magnets

China Sets New World Record in Creating Stable Magnetic Field

On September 22, in the laboratory of strong magnetic fields at the physics institutions of high fields in Hefei, China, a new world record was achieved. Scientists successfully created a stable magnetic field using a resistive magnet, reaching an impressive 42 Tesla. This milestone surpassed the previous record held by the United States since 2017, when American scientists created a magnetic field with a capacity of 41.4 Tesla.

Magnets are essential components in various applications, ranging from everyday gadgets to advanced technologies. They are divided into two main types: permanent magnets and electromagnets. Permanent magnets, made from ferromagnetic materials like iron and cobalt, retain their magnetic field even after magnetization. On the other hand, electromagnets, including resistive magnets made from metals such as copper and aluminum, are versatile and can be controlled by adjusting the current passing through them.

Despite their usefulness, resistive magnets generate significant heat due to wire resistance. To overcome this challenge, scientists also utilize superconducting materials that can conduct current without heat loss, although they require extremely low temperatures. In 2022, the same Chinese research group had set a world record by creating a hybrid magnet with a magnetic field of 45.22 Tesla. This recent achievement in optimizing the production of resistive magnets marks a significant advancement in this technology.

The ability to generate such powerful magnetic fields is crucial for conducting advanced scientific experiments. High magnetic fields enable the study of new physical phenomena and the exploration of previously unknown laws of nature. Only a handful of countries, including China and the USA, possess the scientific infrastructure to work with stable magnetic fields of such intensity. More than 10 Nobel Prize-winning discoveries have been made using technologies involving powerful magnets.

This new record underscores China’s commitment to becoming a leader in the production of powerful magnets for scientific research and industrial applications.

/Reports, release notes, official announcements.