Cold storage material, refrigerator, superconductive Coyle assembling apparatus and method for producing cold storage material

摘要

A cold storage material having a large specific heat and a small magnetization in a very low temperature region, and a better manufacturing property, and a manufacturing method thereof are provided. A refrigerator having a high efficiency and excellent cooling performance by filling this regenerator is provided. In addition, a superconducting Coyle integration apparatus capable of reducing the influence of magnetic noise derived from the cold storage material is provided.The rechargeable material of the embodiment is a particle composed of an intermetallic compound in which the thcr2 SI2 type structure (11) exceeds 80% by volume, and the crystallite size is 70 nm or less.