N2 - The purpose of this paper is to depict the effect of diffusion and internal heat source on a two-temperature magneto-thermoelastic medium. The effect of magnetic field on two-temperature thermoelastic medium within the three-phase-lag model and Green-Naghdi theory without energy dissipation i discussed. The analytical method used to obtain the formula of the physical quantities is the normal mode analysis. Numerical results for the field quantities given in the physical domain are illustrated on the graphs. Comparisons are made with results of the two models with and without diffusion as well as the internal heat source and in the absence and presence of a magnetic field. L1 - http://www.czasopisma.pan.pl/Content/107847/PDF-MASTER/02_paper.pdf L2 - http://www.czasopisma.pan.pl/Content/107847 PY - 2018 IS - No 2 KW - diffusion KW - Green-Naghdi theory KW - internal heat source KW - Three-phase-lag model KW - Two-temperature A1 - Othman Mohamed I. A1 - Said Samia M. PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences VL - vol. 39 DA - 2018.06.30 T1 - Effect of diffusion and internal heat source on a two-temperature thermoelastic medium with three-phase-lag model UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/107847 T2 - Archives of Thermodynamics