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china news service, beijing, october 3 (reporter sun zifa) the reporter learned from the institute of physics of the chinese academy of sciences that using china's large scientific device-the comprehensive extreme conditions experimental facility (secuf), the institute's cheng jinguang team and zhou rui team teamed up with domestic and foreign experts to a research team has recently made important progress in the research of nickel-based high-temperature superconductors, achieving bulk high-temperature superconductivity in the high-pressure tetragonal phase of praseodymium-doped double nickel oxide layer perovskite materials.

the collaborative team gave full play to the advantages of the unique experimental measurement technology of the comprehensive extreme conditions experimental device, and simultaneously provided zero resistance and high-temperature bulk high-temperature superconductivity under high pressure in a polycrystalline sample of praseodymium-doped double nickel oxide layer perovskite material. two key experimental evidences of complete diamagnetism have clarified the current controversial issues about the origin of nickel-based high-temperature superconductivity and bulk superconductivity, and revealed the adverse impact of microstructural disorder on high-temperature superconductivity.

physical photos of the six-sided anvil high-pressure experimental station and the high-magnetic field nuclear magnetic resonance experimental station of the comprehensive extreme conditions experimental facility, as well as the high-pressure structural evolution and superconducting phase diagram of the praseodymium-doped double nickel oxide layer perovskite material polycrystalline sample. institute of physics, chinese academy of sciences/photo provided

this important research progress paper in the field of high-temperature superconductivity was published online in the internationally renowned academic journal "nature" on the night of october 2, beijing time. this research work has an important guiding role in the further optimized design and synthesis of nickel-based high-temperature superconducting materials, and will promote the research process of nickel-based high-temperature superconductors.