COMPOUND SUPERCONDUCTOR, AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To observe materials from a viewpoint different from the former for developing a room temperature superconductor, to find a new superconductive compound, and to expand the series of superconductive compounds. SOLUTION: Disclosed is a compound superconductor as a compound with a mayenite type crystal structure shown by chemical formula [Ca24Al28O64]4+2[xO2-+2yA+2ä1-(x+2y)}e-] (A denotes one or more kinds selected from OH-, O-and O2-clathrated in a cage; and 0≤x+2y≤0.5). This compound superconductor can be produced by preparing a compound with a mayenite type crystal structure shown by chemical formula [Ca24Al28O64]4+2[xO2-+2yA] (A denotes one or more kinds selected from OH-, O-and O2-clathrated in a cage; and 0≤x≤1 and y=1-x) in a method where magnetic ions are incorporated therein, and substituting≥50 atomic% of the total of O2-and A, (x+2y) for electrons. COPYRIGHT: (C)2008,JPO&INPIT