| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2153 - C8-2154 | |
| DOI | https://doi.org/10.1051/jphyscol:19888964 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2153-C8-2154
DOI: 10.1051/jphyscol:19888964
1 Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742 (USA) and National Bureau of Standards, Gaithersburg, MD 20899 U.S.A.
2 Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 U.S.A.
3 MS-K764, Los Alamos National Laboratory, Los Alamos, NM 87545 U.S.A.
J. Phys. Colloques 49 (1988) C8-2153-C8-2154
DOI: 10.1051/jphyscol:19888964
ANTIFERROMAGNETIC ORDER OF THE Cu IN RBa2Cu3O6+x
J. W. Lynn1, W.-H. Li1, H. A. Mook2, B. C. Sales2 et Z. Fisk31 Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742 (USA) and National Bureau of Standards, Gaithersburg, MD 20899 U.S.A.
2 Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 U.S.A.
3 MS-K764, Los Alamos National Laboratory, Los Alamos, NM 87545 U.S.A.
Abstract
Neutron diffraction measurements have been taken on single crystals of RBa2Cu3O6+x to explore the nature of the magnetic order as a function of oxygen concentration x. The Cu-O planes order antiferromagnetically at TN1, with TN1 (x ≈ 0) ˜ 450 K. At lower temperatures the oxygen-deficient Cu planes also order magnetically, with a substantial low temperature moment (˜ 1/2 µB) and a simple antiferromagnetic sequencing along the c-axis. Both ordering temperatures decrease with increasing x, with TN2 being much more sensitive to x than TN1.