  We study the large-time behavior of strong solutions to the equations of a
planar magnetohydrodynamic compressible flow with the heat conductivity
proportional to a nonnegative power of the temperature. Both the specific
volume and the temperature are proved to be bounded from below and above
independently of time. Moreover, it is shown that the global strong solution is
nonlinearly exponentially stable as time tends to infinity. Our result can be
regarded as a natural generalization of the previous ones for the compressible
Navier-Stokes system to MHD system with either constant heat-conductivity or
nonlinear and temperature-dependent heat-conductivity.
