| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-2195 - C8-2196 | |
| DOI | https://doi.org/10.1051/jphyscol:19888985 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2195-C8-2196
DOI: 10.1051/jphyscol:19888985
Applied Physics Laboratory, The Johns Hopkins University, Laurel, MD 20707, U.S.A.
J. Phys. Colloques 49 (1988) C8-2195-C8-2196
DOI: 10.1051/jphyscol:19888985
EFFECT OF IONIC SIZE ON MAGNETIC ORDERING IN RBa2Cu3Oy CERAMICS
T. J. KistenmacherApplied Physics Laboratory, The Johns Hopkins University, Laurel, MD 20707, U.S.A.
Abstract
The effect of variations in the radius of the rare-earth ion R in RBa2Cu3Oy ceramics on the Néel temperature (TN) and magnetic entropy are identified. Parallel trands in TN and the de Gennes factor with radius indicate that superexchange leads to antiferrornagnetism in the rare-earth sublattice.