. "Through the assist of the full potential linear augmented plane wave (FPLAPW) method, the calculations of the electronic band structure, density of states, charge density, Fermi energy and regularity dependent dielectric functions of Cs2KTbCl6 and Cs2KEuCl6 are reported. This study shows that the nature of both these compounds is metallic. The generalized gradient approximations (GGA) exchange correlation potential was applied. The densities of states around Fermi level are frequently subjugated by Eu/Tb-f and DOS below Fermi level are subjugated by Eu/Tb-s/d, Cs-s, CL-s and K-s/p. The value of the DOS at Fermi level N(E-F) is 17.02 and 4.86 (states per unit cell per eV) for Cs2KEuCl6 and Cs2KTbCl6. The bare electronic specific heat coefficient, is found to be 2.95 and 0.84 mJ/mol K-2 for Cs2KEuCl6 and Cs2KTbCl6, respectively. Three bands crossing the Fermi level along the Gamma - A direction of Brillion zone of Cs2KTbCl6 compound and one band crossing along the Gamma - A direction of Brillion zone of Cs2KEuCl6 compounds, to form the Fermi surface. There exists a strong hybridization between Th/Eu-K-p and Cl-s K-s and at -5.0 and -4.0 eV. (C) 2013 Elsevier B.V. All rights reserved" . . . "[E1783A78A374]" . . "NL - Nizozemsko" . . "Azam, Sikander" . "108691" . . "2"^^ . "P(ED2.1.00/01.0024), S" . "Study of electronic structure, charge density, Fermi energy and optical properties of Cs2KTbCl6 and Cs2KEuCl6" . "Reshak, Ali Hussain" . "RIV/60076658:12520/13:43885173!RIV14-MSM-12520___" . . . "0921-4526" . "12520" . "2"^^ . "Through the assist of the full potential linear augmented plane wave (FPLAPW) method, the calculations of the electronic band structure, density of states, charge density, Fermi energy and regularity dependent dielectric functions of Cs2KTbCl6 and Cs2KEuCl6 are reported. This study shows that the nature of both these compounds is metallic. The generalized gradient approximations (GGA) exchange correlation potential was applied. The densities of states around Fermi level are frequently subjugated by Eu/Tb-f and DOS below Fermi level are subjugated by Eu/Tb-s/d, Cs-s, CL-s and K-s/p. The value of the DOS at Fermi level N(E-F) is 17.02 and 4.86 (states per unit cell per eV) for Cs2KEuCl6 and Cs2KTbCl6. The bare electronic specific heat coefficient, is found to be 2.95 and 0.84 mJ/mol K-2 for Cs2KEuCl6 and Cs2KTbCl6, respectively. Three bands crossing the Fermi level along the Gamma - A direction of Brillion zone of Cs2KTbCl6 compound and one band crossing along the Gamma - A direction of Brillion zone of Cs2KEuCl6 compounds, to form the Fermi surface. There exists a strong hybridization between Th/Eu-K-p and Cl-s K-s and at -5.0 and -4.0 eV. (C) 2013 Elsevier B.V. All rights reserved"@en . "DFT; GGA; Europium compounds; Terbium compound"@en . "Physica B - Condensed Matter" . . "Reshak, Ali Hussain" . . "Azam, Sikander" . . . "RIV/60076658:12520/13:43885173" . . "Study of electronic structure, charge density, Fermi energy and optical properties of Cs2KTbCl6 and Cs2KEuCl6"@en . . . "10.1016/j.physb.2013.08.048" . . "Study of electronic structure, charge density, Fermi energy and optical properties of Cs2KTbCl6 and Cs2KEuCl6"@en . "Study of electronic structure, charge density, Fermi energy and optical properties of Cs2KTbCl6 and Cs2KEuCl6" . . "http://www.sciencedirect.com/science/article/pii/S0921452613005280" . "7"^^ . "431" . "Neuveden" . "000325939500020" .