Numéro
J. Phys. France
Volume 50, Numéro 11, juin 1989
Page(s) 1297 - 1299
DOI https://doi.org/10.1051/jphys:0198900500110129700
J. Phys. France 50, 1297-1299 (1989)
DOI: 10.1051/jphys:0198900500110129700

The magnetic phase transition in layered cesium rare earth metal dimolybdates

P. Stefányi1, A. Feher1, A. Orendácová1, E.E. Anders2 et A.I. Zvyagin2

1  Safárik University, nám.Febr.vít'.9, 041 54 Kosice, Czechoslovakia
2  Physical-Technical Institute of Low Temperatures, Kharkov, U.S.S.R


Abstract
Heat capacity measurements on CsGd (MoO4)2, CsDy (MoO4)2 and CsDy0.95Eu0.05 (MoO 4)2 show that sharp anomalies occur at Tc = 0.448 K, Tc = 1.288 K and Tc = 1.227 K, respectively. The heat capacity behaviour is compared with 2D and 3D Ising model.


Résumé
Des mesures de chaleur spécifique de CsGd (MoO4)2, CsDy (MoO4)2 et CsDy0,95Eu0,05 (MoO4)2 montrent des anomalies aigües à Tc = 0, 448 K, Tc =1, 288 K et Tc = 1, 227 K, respectivement. Les résultats sont comparés aux prédictions du modèle d'Ising à 2D et 3D.

PACS
7540C - Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.).
7530K - Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.).

Key words
caesium compounds -- dysprosium compounds -- europium compounds -- gadolinium compounds -- magnetic transitions -- specific heat of solids