Neutron-powder-diffraction study of the structure and antiferromagnetic ordering in Pr2CuO4

Cox, D. E. ; Goldman, A. I. ; Subramanian, M. A. ; Gopalakrishnan, J. ; Sleight, A. W. (1989) Neutron-powder-diffraction study of the structure and antiferromagnetic ordering in Pr2CuO4 Physical Review B, 40 (10). pp. 6998-7004. ISSN 0163-1829

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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.40.6998

Related URL: http://dx.doi.org/10.1103/PhysRevB.40.6998

Abstract

A neutron-powder-diffraction study has been carried out on Pr2CuO4, which has the T'-type structure of the new high-Tc electron superconductors. The compound orders antiferromagnetically at about 270 K. The magnetic intensities at 15 K can be equally well accounted for by a collinear magnetic structure with orthorhombic symmetry or a noncollinear structure with tetragonal symmetry. In both cases, Cu moments are coupled antiferromagnetically within the CuO2 layers, the ordered moment being 0.48μB at 15 K. Rietveld refinement at 298 and 15 K shows the crystal structure is essentially unchanged; in particular, there is no detectable distortion at low temperature.

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ID Code:12843
Deposited On:11 Nov 2010 08:45
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