| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-1255 - C8-1256 | |
| DOI | https://doi.org/10.1051/jphyscol:19888570 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1255-C8-1256
DOI: 10.1051/jphyscol:19888570
1 Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, 0X1 3QR Oxford, G.B.
2 Institut Laue-Langevin, 156X, 38042 Grenoble, France.
3 The Studsvik Neutron Research Laboratory, University of Uppsala, 61182 Nykoping, Sweden.
J. Phys. Colloques 49 (1988) C8-1255-C8-1256
DOI: 10.1051/jphyscol:19888570
THE EFFECT OF MAGNETIC AND NON-MAGNETIC DILUTION ON THE MAGNETIC ORDERING IN THE HEXAGONAL ANTIFERROMAGNET CsMnBr3
D. Visser1, A. Harrison1 et G. J. McIntyre2, 31 Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, 0X1 3QR Oxford, G.B.
2 Institut Laue-Langevin, 156X, 38042 Grenoble, France.
3 The Studsvik Neutron Research Laboratory, University of Uppsala, 61182 Nykoping, Sweden.
Abstract
Elastic neutron scattering measurements on the hexagonal antiferromagnet CsMnBr3 showed that TN falls steeply with concentration x of the diamagnetic impurities (Mg2+), becoming zero at x = 0.14 ; the critical exponent of the magnetisation, β, increased from 0.19(1) (x = 0) to 0.34(1) (x = 0.09). The reduction of TN and increase in β on addition of induced-moment impurities (Fe2+) is less pronounced.