The antimatter of neodymium iron boron permanent magnet materials. Whether there is antimatter in the universe is a major scientific proposition. According to the currently recognized Big Bang theory, the universe was formed by the big bang about 15 billion years ago, and the big bang should produce the same amount of matter. And antimatter, what makes up the world around us is the matter, and where is the antimatter?
Another problem in astrophysics and cosmology today is the search for dark matter. In astronomy, the matter in the universe that cannot be seen by optical methods is called dark matter. Its characteristic is that it neither emits light nor interacts with light, and only has universal gravitation. Recently, astronomical observations and research have found that dark matter accounts for about 60% of the universe. What is this dark matter? There are different opinions.
Therefore, finding a way to detect antimatter and dark matter is particularly important! Thus, the "Alpha Magnetic Spectrometer" came into being. The "Alpha Magnetic Spectrometer" experiment was led by Professor Ding Zhaozhong, a Chinese American scientist and Nobel Prize winner. Many scientists from more than 10 countries and regions including the United States, China, and Germany participated in the research and design work. Its core component is a neodymium iron boron ring-shaped permanent magnet with an outer diameter of 1.6 meters, an inner diameter of 1.2 meters, and a weight of 2 tons. If a conventional magnet is used, it cannot operate in space due to the influence of the diffuse magnetic field, and a superconducting magnet is used. It must be operated at ultra-low temperature, which is not realistic. What material is the most suitable? Scientists in my country have proposed to make a neodymium iron boron permanent magnet that fully meets the requirements of space operation, and installs it into an "Alpha Magnetic Spectrometer" to provide powerful magnetism for capturing antimatter and dark matter information.