Investigation with ab-initio method of structual, mechanical, magnetic and electronic properties of ACrO4(Sr, Ba, Ca and some rare earth elements) compounds

The structural, mechanical, magnetic and electronic properties of ACrO4 (A = Sr, Ba, Ca and some rare earth elements have been calculated based on density functional theory (DFT). The spin polarized generalized gradient approximation (GGA) has been used for modeling exchange-correlation effects. It has been observed that the lattice parameters obtained as a result of structural optimization are in good agreement with experimental and theoretical values. Bulk modulus, shear modulus, Young's modulus Poisson's ratio, anisotropy factors, sound velocities, Debye temperatures, total and atomic magnetic moments have been calculated and interpreted. The electronic band structures of ACrO4 compounds and the total and partial density of states corresponding to these band structures have been calculated. The indirectly obtained Eg values for SrCrO4, BaCrO4, CaCrO4, EurO4 and PbCrO4 compounds are 2.70 eV, 2.79 eV, 2.08 eV, 2.26 eV and 2.17 eV, respectively. PrCrO4, SmCrO4, ErCrO4, ErCrO4 and LuCrO4 compounds are conductive in the case of spin up. The indirectly obtained Eg values for spin down are 2.65 eV, 2.61 eV, 2.43 eV, 2.52eV and 2.50 eV, respectively.