Not long ago, the United States announced that nuclear fusion technology has achieved “net energy gain” for the first time. This is a major breakthrough related to energy technology. Now American researchers are going to make major achievements in the field of superconductivity and realize the coveted room temperature superconductivity. , which is also a new technology that subverts physics.
According to Sciencenews, physicist Ranga Dias of the University of Rochester in the United States and his team announced at the American Physical Society meeting that they have found a new material called ternary lutetium-nitrogen hydrogen system (ternary lutetium-nitrogen hydrogen system) , realized room temperature superconductivity.
Based on this material, under the pressure of 1GPa, the highest temperature of superconducting transition is only 294K, that is, the room temperature is about 21 degrees, which has reached the normal temperature level of human life.
This pressure is still very high, equivalent to 10,000 times the atmospheric pressure, but it has been greatly reduced compared with the previous pressure to achieve normal temperature superconductivity. In the past, it may have required tens of thousands, hundreds of thousands to millions of times the atmospheric pressure.
At present, the research they have published has not been reviewed by the industry, and this team has also had similar papers withdrawn before, but if the research can be confirmed, this technology can be said to subvert the existence of physics, and it is beneficial to many fields of human science and technology. have extremely profound effects.
The absence of electrical resistance exhibited by superconducting materials would have enormous potential for applications if it existed at ambient temperature and pressure conditions. Despite decades of intense research efforts, such a state has yet to be realized. At ambient pressures, cuprates are the material class exhibiting superconductivity to the highest critical superconducting transition temperatures (Tc), up to about 133 K . Over the past decade, high-pressure ‘chemical precompression’ of hydrogen-dominant alloys has led the search for high-temperature superconductivity, with demonstrated Tc approaching the freezing point of water in binary hydrides at megabar pressures. Ternary hydrogen-rich compounds, such as carbonaceous sulfur hydride, offer an even larger chemical space to potentially improve the properties of superconducting hydrides. Here we report evidence of superconductivity on a nitrogen-doped lutetium hydride with a maximum Tc of 294 K at 10 kbar, that is, superconductivity at room temperature and near-ambient pressures. The compound was synthesized under high-pressure high-temperature conditions and then—after full recoverability—its material and superconducting properties were examined along compression pathways. These include temperature-dependent resistance with and without an applied magnetic field, the magnetization (M) versus magnetic field (H) curve, a.c. and d.c. magnetic susceptibility, as well as heat-capacity measurements. X-ray diffraction (XRD), energy-dispersive X-ray (EDX) and theoretical simulations provide some insight into the stoichiometry of the synthesized material. Nevertheless, further experiments and simulations are needed to determine the exact stoichiometry of hydrogen and nitrogen, and their respective atomistic positions, in a greater effort to further understand the superconducting state of the material.
Post time: Mar-09-2023
