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dc.contributor.authorNyawere, P.W.O
dc.contributor.authorBarasa, Daniel Bem
dc.contributor.authorNafulawabululu, Elicah
dc.date.accessioned2021-09-10T08:48:30Z
dc.date.available2021-09-10T08:48:30Z
dc.date.issued2018-06
dc.identifier.citationVolume 4~ Issue 1 (2018) pp: 36-40en_US
dc.identifier.issnOnline) : 2348-2532
dc.identifier.urihttp://repository.rongovarsity.ac.ke/handle/123456789/2347
dc.description.abstractThe structural, electronic and elastic properties of tysonite Lanthanum fluoride (LaF3) have been studied using Density Functional Theory. The lattice constants were calculated and then the values fitted into the energy volume relation using the Birch-Murnaghan third order equation of state. Lattice parameter in this calculations are as follows; a = 7.245Å, c = 7.388Å and c/a = 1.02Å against 7.128Å, 7.329Å and 1.028Å of CASTEP. A band gap of 7.78eV was obtained in comparison to the 9.0eV of experiment and this is because DFT-GGA/LDA is known to underestimate band gaps. The results for elastic constants for the directions C11 = 170.1, C12 = 76.26, C13 = 58.69, C14 = -1.66, C33 = 208.08 and C44 = 33.90. Compared to other theoretical and experimental values, these results are in good agreement.en_US
dc.language.isoenen_US
dc.publisherJournal of Research in Environmental and Earth Scienceen_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectStructural properties, Tysonite LaF3, band gap, Elastic constantsen_US
dc.titleFirst-Principles Calculations Of Structural, Electronic And Elastic Properties Of Tysonite Lanthanum Fluoride (Laf3)en_US
dc.typeArticleen_US


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Attribution-NonCommercial-ShareAlike 3.0 United States
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States