Ettingshausen coefficient (EC) in the compositional semiconductor superlattice (CSSL) under the influence of electromagnetic wave (EMW) is surveyed by using the quantum kinetic equation for electrons. The analytical expressions of the Ettingshausen coefficient are numerically calculated for the GaAs/AlGaAs compositional semiconductor superlattice. | Magneto – thermoelectric effects in compositional superlattice in the presence of electromagnetic wave