This article is concerned with the linear theory of thermoelasticity with
microtemperatures. In a recent article we have used the logarithmic convexity method
to investigate uniqueness, instability and structural stability. The results are restricted
to the case when the constitutive coefficients
k1 and k3 have the same signs. Here we
prove that these results also hold when the coefficients k1 and k3 have opposite signs.
Quintanilla, R. On the logarithmic convexity in thermoelastiscity with microtemperatures. "Journal of thermal stresses", 01 Abril 2013, vol. 36, núm. 4, p. 378-386.