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U.S. manufactures single crystal structure metal glass Generally speaking, the glassy substances including metal glass are in a disordered state in the internal structure, but according to the American Daily Science Network, a research team in the United States has recently applied After processing the glass sample, a single crystal structure in a highly ordered state was found inside. This research will help people deepen their understanding of metal glass materials and create a new type of metal glass preparation process. Related papers were published in the published "Science" magazine. Although the internal structure of glass and glassy substances generally shows a disordered state, the adjacent atoms (generally no more than 4 to 5 atomic intervals) occasionally show a temporary order, which is It is called "short-range order", and the slightly larger range is called "medium-range order", and the larger one is similar to ordinary crystal is called "long-range order". At present, most of the structures of metallic glass are long-range disordered and short-range ordered. Attempts to make metallic glass close to crystals have failed experiments with "long-range ordered" structures. A study by Mao Heguang, a researcher at the Carnegie Geophysical Laboratory in the United States, and colleagues is expected to change this status quo and make it possible to produce metal glass with a long-range ordered structure. In the experiment, the researchers placed most of the 1 cm long, very fine cerium aluminum metal glass samples at 25 gigapascals (250,000 times the standard atmospheric pressure) for processing. It was found that all samples were "devitrified" under strong pressure, closed the glass state and formed a face-centered cubic crystal structure, and their atoms were stuffed into this structure like a table tennis ball. After the sample was brought back to ambient pressure, the new structure remained stable. Mao Heguang said that this exciting result shows that pressing cerium-aluminum glass can obtain the long-range ordered "perfect glass" that people need. Perhaps this situation also exists in other metal glasses. Zeng Qiaoshi, a researcher at Zhejiang University who is about to join the Maoheguang group, said that high-pressure technology may provide a way to make single-crystal materials from metallic glass. In addition, it effectively combines two extreme materials: highly ordered single crystal and highly disordered glass. Metal glass is also called amorphous alloy and is a new type of material with special properties. This material is harder than glass and more flexible than metal. It has the advantages of both and overcomes their shortcomings. Its high strength, good magnetic properties and corrosion resistance make it widely applicable in the fields of electronics, aerospace, machinery, microelectronics, etc. The transformer core made of it has a significant energy-saving effect, and the use of this material in electronic equipment can also play a role in reducing the weight of the equipment, increasing the effective load, and enhancing the anti-interference ability. In addition, it can also be used to manufacture golf clubs, inductive anti-theft labels, etc. The Energy Frontier Research Center of the US Department of Energy, the National Natural Science Foundation of China, and the China Postdoctoral Science Foundation provided funding for this research.