| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-225 - C8-226 | |
| DOI | https://doi.org/10.1051/jphyscol:1988899 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-225-C8-226
DOI: 10.1051/jphyscol:1988899
Physics Department and Scarborough College, University of Toronto, Toronto M5S 1A7, Canada
J. Phys. Colloques 49 (1988) C8-225-C8-226
DOI: 10.1051/jphyscol:1988899
GIANT GRUNEISEN PARAMETER OF SPIN FLUCTUATIONS IN CHROMIUM
Eric FawcettPhysics Department and Scarborough College, University of Toronto, Toronto M5S 1A7, Canada
Abstract
Thermal expansion and bulk modulus data for pure Cr and for dilute antiferromagnetic Cr100-xVx alloys, in the paramagnetic phase close to the Néel temperature, are used to determine the Gruneisen parameter, Ɖ&Pi+ = -d ln TSF(ω) / dω, TSF(ω) being the temperature (energy) parameter characteristic of the spin fluctuations. In Cr the giant Gruneisen parameter, Ɖ&Pi+ = -155, is about three times larger than the value, Ɖ&Pi+ = - 55, in Cr + 0.5/0.67 at.% V.