Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 401, Issue -, Pages 684-694Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2015.10.099
Keywords
Filled skutterudite; Spin polarization; Electronic band structure; Fermi surface; Electronic charge density distribution
Funding
- ERDF as part of the Ministry of Education, Youth and Sports OP RDI programme [CZ.1.05/2.1.00/03.0088]
- Ministry of Education, Youth and Sports under the National Sustainability Programme I [LO1402]
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We have performed spin-polarized calculation for the electronic band structure, density of states, Fermi surface and the space electronic charge density distribution for the filled-skutterudites LaFe(4)Pn(12) (Pn = P, As and Sb) compounds. It has been noticed that for both LaFe(4)Pn(12) and LaFe4As12 there are two bands cross Fermi level (E-F) for the spin-up and spin-down states, while for LaFe4Sb12 there is only one band cross E-F for the spin-up state and three bands cross E-F for the spin-down state. As the partial DOS of La-s, d, Fe-s/p/d and Pn-s/p/d coincide Fermi level at nonzero value, it reveals that the electrons of these orbitals contribute in the conduction process. The calculated values of the density of the states at Fermi level N(E-F) and the associated electronic specific heat coefficient (gamma) for the spin-up/down states are decreases with substituting P -> As -> Sb. The bonds nature and the interactions between the atoms for the spin-up/down configurations were investigated in (1 0 0) and (1 0 1) crystallographic planes. (C) 2015 Elsevier B.V. All rights reserved.
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