Journal ArticleDOI
New quarternary half metallic material CoFeMnSi
TLDR
Based on the measured XRD pattern and magnetization curve, Wang et al. as discussed by the authors deduced that the CoFeMnSi compound is crystallized in the structure where half metallicity occurs.Abstract:
A good field to develop new materials with half metallicity is the quaternary Heusler alloys. The preferred route is to combine the compounds that have been already grown in Heusler structure. As a typical example, the quaternary LiMgPdSb-type CoFeMnSi have been investigated in detail. For the quaternary LiMgPdSb-type compounds, three nonequivalent structures exist. From the calculated density of state (DOS) results, it can be seen that one superstructure shows half metallicity. The second superstructure has a pseudogap at the Fermi level. The third superstructure shows metallic behavior. Based on the analysis of the measured XRD pattern and magnetization curve, we can deduce that the CoFeMnSi compound is crystallized in the structure where half metallicity occurs.read more
Citations
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Slater-Pauling behavior in LiMgPdSn-type multifunctional quaternary Heusler materials: Half-metallicity, spin-gapless and magnetic semiconductors
TL;DR: In this paper, the authors employ ab-initio electronic structure calculations to study 60 LiMgPdSn-type quaternary Heusler compounds, including half-metals, spin-gapless semiconductors, and 9 semiconductor types.
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Large half-metallic gaps in the quaternary Heusler alloys CoFeCrZ (Z = Al, Si, Ga, Ge): A first-principles study
TL;DR: In this article, a quaternary Heusler half-metallic ferromagnets CoFeCrZ was designed and its first-principles calculations showed that, within a generalized gradient approximation for the electronic exchange correlation functional, both CoFeFeCrGa and CoFeGe are nearly halfmetals.
Journal ArticleDOI
Equiatomic quaternary Heusler alloys: A material perspective for spintronic applications
Lakhan Bainsla,K. G. Suresh +1 more
TL;DR: In this paper, a quaternary Heusler structure with different structural symmetries (space group F-43m, #216) was obtained for half-metallic ferromagnetic (HMF) materials.
Journal ArticleDOI
A new high performance method for determining the parameters of PV cells and modules based on guaranteed convergence particle swarm optimization
TL;DR: Comparisons with other published methods demonstrate that the proposed GCPSO method produces very good results in the extraction of the PV model parameters, which can find highly accurate solutions while demanding a reduced computational cost.
Journal ArticleDOI
Sustainable hydrogen production options and the role of IAHE
Ibrahim Dincer,Calin Zamfirescu +1 more
TL;DR: In this paper, the authors identified and discussed some potential sustainable hydrogen production options and discussed the achievable energy and exergy efficiency of the method. But, they did not provide a range of hydrogen production capacity for each of the options.
References
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Generalized Gradient Approximation Made Simple
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Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure
TL;DR: In this paper, an ordered double perovskite (Sr2FeMoO) was shown to exhibit intrinsic tunnelling-type magnetoresistance at room temperature.
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Slater-Pauling behavior and origin of the half-metallicity of the full-Heusler alloys
TL;DR: In this article, the full-potential screened Korringa-Kohn-Rostoker method was used to study the half-metallic properties of Co, Fe, Rh, and Ru.