Thermal flicker noise in dissipative processes of pre-melting of crystalline materials

A spectral analysis is performed of fluctuations in the liberation of heat in the pre-melting regime of Cu, Sb, Ge, and KCl. It is shown for the first time that the observed thermal fluctuations can be identified as two-level thermal flicker noise. Characteristic parameters of the thermal fluctuations of transitional processes in the melting of crystalline materials are introduced. Fiz. Tverd. Tela (St. Petersburg) 41, 1679–1682 (September 1999)