The specific heat of (KBr)1-x(KCN)x for x=0.0, 0.19, 0.41, and 0.60 has been measured from 1.5 to 25 K. The data are compared with the theory developed by Grannan, Randeria, and Sethna [Phys. Rev. Lett. 60, 1402 (1988)] to describe the specific heat of (KBr)1-x(KCN)x at intermediate temperatures through the librational motion of CN- ions modeled as interacting elastic dipoles. Data are also presented on the specific heat of KI between 1.5 and 30 K. We review (KBr)1-x(KCN)x elastic-constant data for c44 and c11 at 4.2 K and c12 at 300 K.
ASJC Scopus subject areas
- Condensed Matter Physics