China's first high-temperature vibrating sample magnetometer with a superconducting magnetic field, constructed from domestic components, has been put into use at the Baotou Research Institute of Rare Earths, breaking the foreign technological monopoly on high-end magnetic measurement instruments.

High-performance rare-earth permanent magnet materials serve as core supports for the rapid development of emerging industries such as aerospace, new energy vehicles, and renewable energy. The magnetic stability of these materials under high-temperature and strong-magnetic conditions directly determines their energy efficiency and service life.

The high-temperature vibrating sample magnetometer can accurately capture subtle changes in the magnetic properties of permanent magnet materials under extreme working conditions and enable precise characterization of the magnetic parameters of rare-earth materials under variable temperature and magnetic field conditions. It will provide key technical support for the R&D and performance evaluation of new materials, including rare-earth permanent magnets and magnetic refrigeration materials.

According to Ren Shaoqing, an institute representative, the magnetometer is mainly used to measure the magnetic properties of neodymium-iron-boron and samarium-cobalt magnets at high temperatures. It features superconducting excitation, a wide temperature range, high measurement sensitivity, fast testing speeds, convenient operation, and abundant optional modules, enabling researchers to conduct various sample tests and experiments.

"This equipment not only improves scientific research capabilities but also supports the surrounding permanent magnet industry by providing more accurate high-temperature magnetic performance data, helping rare-earth enterprises achieve high-quality development," said Ren.

With the launch of this equipment, China's rare-earth material R&D is advancing toward independence and precision, providing stronger momentum for strategic industries such as new energy vehicles and wind power.