The main band parameters of HgCdMnTe and HgCdZnTe quaternary solid solution
s were theoretically and experimentally studied. Empirical formulas were pr
oposed for the bandgap and intrinsic carrier concentration in a wide range
of temperatures and compositions. Calculated values were found to conform w
ell to experimental data. (C) 2000 MAIK "Nauka/Interperiodica".