65.00.00 Thermal properties of condensed matter (see also section 44 Heat transfer; for thermodynamic properties of quantum fluids and solids, see section 67; for thermal properties of thin films, see 68.60.Dv; for nonelectronic thermal conduction, see 66.25.+g an
65.40.-b Thermal properties of crystalline solids (for specific heat of superconductors, see 74.25.Bt; for specific heat of magnetic systems, see 75.40.Cx)
65.60.+a Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.
65.80.+n Thermal properties of small particles, nanocrystals, and nanotubes (see also 82.60.Qr Thermodynamics of nanoparticles in physical chemistry and chemical physics)
65.90.+i Other topics in thermal properties of condensed matter (restricted to new topics in section 65)