Charifi, Z.Hamad, B.Baaziz, H.Soyalp, F.2025-05-102025-05-1020150304-88531873-476610.1016/j.jmmm.2015.05.0542-s2.0-84930199761https://doi.org/10.1016/j.jmmm.2015.05.054https://hdl.handle.net/20.500.14720/15035Charifi, Zoulikha/0000-0003-3875-4716; Hakim, Baaziz/0000-0003-4860-2740; Soyalp, Fethi/0000-0002-4053-2189The electronic and magnetic properties of Co2Mn1-xCrxSn and Co2MnSn1-ySiy alloys are investigated using density functional theory (OFT) within a full-potential linearized augmented-plane-wave (FPLAPW) method. Amongst the systems under investigation, Co2MnSn1-ySiy alloys show half metallicity with 100% spin polarization at the Fermi level, however Co2Mn1-xCrxSn are found to be pseudo-half metals with Few minority states at the Fermi level and high spin polarization. The substitution of Si with Sn keeps the magnetic moment constant in Co2MnSn1-ySiy alloys, whereas the substitution of Mn with Cr decreases the magnetic moment and degrade the half-metallicity in Co2Mn1-xCrxSn alloys. The Curie temperature is calculated and it is found to be about 928 K for all Co2MnSn1-ySiy alloys, whereas it decreases linearly with x for Co2Mn1-xCrxSn alloys. The lattices constants, bulk modulii, energy gaps, polarization ratio and density of states are calculated and their variation versus x or y are discussed. (C) 2015 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessDftFlapwHalf MetallicityMagnetismArticle393Q3Q2139145WOS:000357652800024