Multiphase behavior and the superconducting composition in Nd2−xCexCuO4

✍ Scribed by J.D. Jorgensen; D.G. Hinks; P. Lightfoot; D.R. Richards; B. Dabrowski; Shiyou Pei; D.T. Marx; A.W. Mitchell; Ying Zheng

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 365 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(09)80340-2

✦ Synopsis

High resolution neutron and x-ray powder diffraction data show that samples of Nd2_xCexCu04 are multiphase except at x=O and the optimum superconducting composition x"'0.165. Cerium doped samples with compositions other than x=O.165 appear to be mixtures of the superconducting phase, which has a fixed composition, and non-superconducting phases with different compositions. The phase separation could result from non-equilibrium behavior during synthesis.