Temperature dependence of the elastic constants of α-NiSO 4·6H2O

V. Stojanoff, F. P. Missell

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4 Scopus citations


We have measured the adiabatic elastic constants of tetragonal α-NiSO4·OH2O in the temperature range 4.2-300 K using ultrasonic pulse-echo techniques. For T = 300 K, we obtained (in units of 1011 dyn/cm2) C11 = 4.68±0.03, C 33 = 3.55±0.02, C44 = 1.155±0.004, C 66 = 2.00±0.01, C12 = 3.82±0.06, and C 13 = 2.07±0.03. These elastic constants give an adiabatic compressibility Ks = (3.39±0.02)×10-12 cm2/dyn. The Debye temperature was calculated in several approximations and was found to be in reasonable agreement with calorimetric data, but in good agreement with values obtained for other compounds of similar composition.

Original languageEnglish
Pages (from-to)939-942
Number of pages4
JournalJournal of Chemical Physics
Issue number2
StatePublished - 1982
Externally publishedYes


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