HIGH-TEMPERATURE SUPERCONDUCTING HYDRIDE AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2021 - IPC H01B12/00 H01L39/00 

FIELD: conductors.

SUBSTANCE: present invention relates to the technology of manufacturing high-temperature superconducting compounds, namely metal polyhydrides, and can be applied in low-current superconducting electronics for manufacturing single-photon detectors, SQUID magnetometers and quantum qubits placed on the surface of a diamond anvil. The high-temperature superconducting hydride has the formula A_xY_1-xH₆, wherein A is lanthanum or magnesium, x is in the range from 0 to 1, and the content of H is no less than 86 atomic percent. The superconductor is produced by compressing a hydride-forming element with a hydrogen source under super-high pressure, followed by heating by a laser pulse, wherein La_xY_1-x or Mg _xY_1-x alloys are used as a hydride-forming element, wherein x is in the range from 0 to 1. The alloys are obtained by sintering La and Y or Mg and Y in an inert atmosphere, followed by placing the alloy and the source of hydrogen in a diamond anvil, compressing to a pressure of 150 to 200 GPa, and heating by laser pulses in the infrared range to a temperature of 1,500 to 3,000 K. The compound NH₃BH₃ can be used as a source of hydrogen. Produced is a superconductor with a critical temperature of up to 253 K, critical magnetic field of up to 140 T, and critical current density of no less than 2,000 A/mm².

EFFECT: reduction of the stoichiometric ratio between the metal and hydrogen in the superconductor.

3 cl, 8 dwg, 4 ex