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

D. E. Cox, A. I. Goldman, M. A. Subramanian, J. Gopalakrishnan, and A. W. Sleight
Phys. Rev. B 40, 6998 – Published 1 October 1989
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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.

  • Received 14 April 1989

DOI:https://doi.org/10.1103/PhysRevB.40.6998

©1989 American Physical Society

Authors & Affiliations

D. E. Cox

  • Physics Department, Brookhaven National Laboratory, Upton, New York 11713

A. I. Goldman

  • Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011

M. A. Subramanian, J. Gopalakrishnan, and A. W. Sleight

  • Experimental Station, E. I. DuPont de Nemours and Co., Wilmington, Delaware 19898

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Vol. 40, Iss. 10 — 1 October 1989

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