  We study thermal instability in a magnetized and partially ionized plasma
with charged dust particles. Our linear analysis shows that the growth rate of
the unstable modes in the presence of dust particles strongly depends on the
ratio of the cooling rate and the modified dust-cyclotron frequency. If the
cooling rate is less than the modified dust-cyclotron frequency, then growth
rate of the condensation modes does not modify due to the existence of the
charged dust particles. But when the cooling rate is greater than (or
comparable to) the modified dust-cyclotron frequency, the growth rate of
unstable modes increases because of the dust particles. Also, wavenumber of the
perturbations corresponding to the maximum growth rate shifts to the smaller
values (larger wavelengths) as the cooling rate becomes larger than the
modified dust-cyclotron frequency. We show that growth rate of the condensation
modes increases with the electrical charge of the dust particles.
