Specific heat of single-walled boron nitride nanotubes

Based on a force constant model, we have calculated the phonon spectrum and specific heat of single-walled boron nitride nanotubes. Compared with carbon nanotubes, boron nitride nanotubes have a larger specific heat. The fitting formulas for diameter and chirality dependence of specific heat at 300 K are given. (C) 2004 American Institute of Physics.