Nuclear microscopy of Fe substituted 2212 BiSrCaCuO superconducting crystals

Abstract

Crystals of the new generation BiSrCaCuO superconductors represent challenging materials to grow and fabricate into useful devices. Analysis of the material is also challenging. However the nuclear microprobe offers a possible solution to the problem of measurement of the stoichiometry, including oxygen, and sensitive mapping of micro-structures in single crystals. In the present paper we describe the results of nuclear microscopy of 2212 crystals, both as pure material and with up to 0.02 Fe substituted for Cu. We show evidence that the Fe is fully substituted into the crystal lattice. © 1995.