Structure of the 100 K Superconductor Ba 2 YCu 3 O 7 between (5 ÷ 300) K by Neutron Powder Diffraction

Capponi, J.J.; Chaillout, C; Hewat, A.W.; Léjay, P.; Marezio, M.; Nguyen, N.; Raveau, B.; Soubeyroux, J.L.; Tholence, J.L.; Tournier, R.

doi:10.1209/0295-5075/3/12/009

Public

Structure of the 100 K Superconductor Ba 2 YCu 3 O 7 between (5 ÷ 300) K by Neutron Powder Diffraction

Published in Europhysics Letters (EPL) • Jun 15, 1987

Authors:

J.J. Capponi

C Chaillout

A.W. Hewat

Abstract

Recently Siegrist et al. proposed a structure for a high- T c superconductor Ba 2 YCu 3 O (9-∂) based on an orthorhombic ( a = a p , b = a p , c = 3 a p ) perovskitelike model containing Ba and Y cations ordered over the A -sites of the ABO 3 structure. This ordering is responsible for the tripling ...

Subject

Orthorhombic crystal system

Crystallography

Neutron diffraction

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