METHOD FOR MANUFACTURING SUPERCONDUCTIVE MATERIAL, AND SUPERCONDUCTIVE MATERIAL

To provide a method for manufacturing a widely versatile superconductive material that exhibits superconductive property at high temperatures without using liquid helium, and to provide a superconductive material.SOLUTION: Provided is a method for manufacturing superconductive material in which a counter-facing anvil device 1 including a metallic upper anvil 3, a metallic lower anvil 5, a sample holding part, a pressure controlling part and a rotation controlling part, is used, and the method comprises a molding step of making a powder sample into a molded sample 7, and a high-pressure twisting step in which shear strain is applied by twisting while applying pressure P to the molded sample.EFFECT: It now becomes possible to prepare a sample that is not sufficiently explored until now for reasons such as being known as metastable phase, by mechanical technique, and to explore the characteristics.SELECTED DRAWING: Figure 1 【課題】液体ヘリウムを用いない高温で超伝導特性を示す汎用性が広い超伝導材料の生産方法及び超伝導材料を提供する。【解決手段】金属製の上部アンビル３と、金属製の下部アンビル５と、サンプル保持部と、圧力制御部と、回転制御部と、を備える対向アンビル装置１を用いる超伝導材料の生産方法であって、粉末試料を成型試料７とする成型ステップと、前記成型試料に圧力Ｐをかけながらねじりによりせん断ひずみを加える高圧ねじりステップとを含む。【効果】これまで準安定相として知られていた等の理由で十分に探索されなかった試料を力学的手法で作製し、特性を探索することが可能となる。【選択図】図１