scholarly journals Specific heat and magnetic susceptibility of single-crystalline ZnCr2−xAlxSe4 (x=0.15, 0.23)

2011 ◽  
Vol 72 (8) ◽  
pp. 974-979 ◽  
Author(s):  
E. Malicka ◽  
T. Groń ◽  
A. Ślebarski ◽  
A.W. Pacyna ◽  
J. Goraus ◽  
...  
2011 ◽  
Vol 131 (1-2) ◽  
pp. 142-150 ◽  
Author(s):  
E. Malicka ◽  
T. Groń ◽  
A. Ślebarski ◽  
A. Gągor ◽  
A.W. Pacyna ◽  
...  

2005 ◽  
Vol 72 (2) ◽  
Author(s):  
R. Lortz ◽  
Y. Wang ◽  
S. Abe ◽  
C. Meingast ◽  
Yu. B. Paderno ◽  
...  

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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