Numerical studies of the field dependence of the magnetic specific heat ofEu0.25Sr0.75S andEu0.54Sr0.46S

1986 ◽  
Vol 34 (3) ◽  
pp. 1960-1963 ◽  
Author(s):  
W. Y. Ching ◽  
D. L. Huber
1978 ◽  
Vol 39 (C6) ◽  
pp. C6-762-C6-764 ◽  
Author(s):  
D. Gonzalez ◽  
J. Bartolomé ◽  
R. Navarro ◽  
F. J.A.M. Greidanus ◽  
L. J. De Jongh

1996 ◽  
Vol 223-224 ◽  
pp. 208-210 ◽  
Author(s):  
S Süllow ◽  
B Ludoph ◽  
G.J Nieuwenhuys ◽  
A.A Menovsky ◽  
J.A Mydosh

1996 ◽  
Vol 46 (S3) ◽  
pp. 1213-1214 ◽  
Author(s):  
T. E. Hargreaves ◽  
J. Akimitsu ◽  
D. F. Brewer ◽  
N. E. Hussey ◽  
H. Noma ◽  
...  

Thermodynamic measurements have been made at temperatures below 1°K, obtained by the method of magnetic cooling, on copper potassium sulphate and on a diluted copper Tutton salt. A study has been made of the field- dependence (for small fields) of the adiabatic susceptibility of the cooled and thermally isolated salt, the measurements covering the range of temperature from 1°K down to 0.05°K for copper potassium sulphate, and to 0.025° K for the dilute salt. From these measurements the entropy and magnetic susceptibility are determined as functions of the absolute temperature. It is concluded that for both salts the susceptibility follows a Curie-Weiss law, the values of ∆ being 0.034 and 0.0048º K respectively; the specific heats are of the form ∆ / T 2 , the values found for A being 6.1x10 -4 R for copper potassium sulphate and 1.98x10 -4 R for the dilute salt.Deviations from this behaviour in a ferromagnetic direction are found for copper potassium sulphate below 0.07° K.


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