Abstract

The variation of elastic constants of MgO with temperature has been measured from 4.2 to 300 K. The values of the elastic constants at 4.2 K, in units of 1010 N/m2, are C11 = 30.67, C12 = 9.371 and C44 = 15.76. This gives a limiting value of θ0 = 948 K for the Debye characteristic temperature

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