A cubic perovskite crystal structure, a process of preparing the crystal structure, and articles constructed from the crystal structure.

摘要

A cubic perovskite crystal structure is disclosed satisfying the unit cell formula: $where\; R,\; A\; and\; C\; represent\; rare\; earth,\; alkaline\; earth\; and\; copper\; atoms,\; respectively,\; capable\; of\; forming\; a\; superconductive\; R1A2C3\; orthorhombic\; perovskite\; crystal\; structure;\; x\; is\; 0.67\; to\; 1.0;\; y\; is\; up\; to\; 0.2;\; and\; z\; is\; up\; to\; 0.1.\; The\; crystal\; structure\; can\; be\; used\; to\; form\; superconductive\; superlattices\; and\; weak\; links\; for\; Josephson\; junction\; devices.\; The\; crystal\; structure\; can\; be\; produced\; by\; laser\; ablation\; deposition\; at\; a\; temperature\; below\; that\; required\; for\; the\; formation\; of\; a\; superconductive\; R1A2C3\; orthorhombic\; perovskite\; crystal\; structure.\; The\; crystal\; structure\; can\; be\; used\; as\; a\; substrate\; for\; the\; subsequent\; deposition\; of\; an\; R1A2C3\; orthorhombic\; perovskite\; crystal\; structure.\mathop{\mathrm{image}}$