COLD PRESERVATION MATERIAL, COLD PRESERVATION MATERIAL PARTICLE, GRANULAR PARTICLE, COLD PRESERVATION DEVICE, REFRIGERATOR, CRYOPUMP, SUPERCONDUCTING MAGNET, APPARATUS FOR IMAGING NUCLEAR MAGNETIC RESONANCE, APPARATUS FOR NUCLEAR MAGNETIC RESONANCE, APPARATUS FOR DRAWING MONOCRYSTAL WITH APPLICATION OF MAGNETIC FIELD AND DEVICE FOR RE-CONDENSATION OF HELIUM Russian patent published in 2024 - IPC F25B9/14 

FIELD: refrigerating equipment.

SUBSTANCE: application describes a material for cold preservation in one of the embodiments of the invention, which includes a rare-earth oxysulphide containing at least one rare-earth element selected from a group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and an element of the first group in amount of 0.001 at % or more and 10 at % or less, in which the maximum value of the volumetric specific heat capacity in the temperature range from 2 to 10 K is 0.5 J/(cm³·K) or more.

EFFECT: increased volumetric specific heat and high heat conductivity of the material for preservation of cold.

19 cl, 7 dwg, 4 tbl