![]() ![]() This is done by estimating the critical temperature (Tc3)) and the susceptibility exponent y from the analysis of the series by. The anisotropic nearest-neighbour Heisenberg model for the simple cubic lattice has been in-vestigated by interpolating the anisotropy between the Ising and isotropic Heisenberg limits via general spin high-temperature series expansions of the zero-field suspectibility. The slow variation of dielectric constant at lower temperature is mainly due to an increase in ionic polarization and the fast increase at higher temperature is due to space charge polarization. Above 650 K the results are explained using normal band model. ![]() It is proposed from the magnitude of L and μd and the temperature dependence of μd, that the charge carriers in this material are small polarons and the charge transport process occurs by a hopping mechanism below 650 K. The drift mobility (μd) and mean free path (L) of the charge carriers were calculated by combining the electrical conductivity and thermoelectric power data. The activation energies below and above this break temperature were estimated as 0.24 eV and 1.18 eV, respectively. A break in the log curve occurs around 650 K. ![]() The compound is found to be an n-type semiconductor. electrical conductivity, thermoelectric power and dielectric constant of polycrystalline cobalt molybdate (CoMoO4) were measured in the 300–1000 K temperature range. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |