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Compton profile study and electronic properties of tantalum diboride.
- Source :
-
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine [Appl Radiat Isot] 2013 Jul; Vol. 77, pp. 38-43. Date of Electronic Publication: 2013 Mar 01. - Publication Year :
- 2013
-
Abstract
- We have reported the first-ever experimental Compton profile (CP) of TaB2 using 20 Ci(137)Cs Compton spectrometer. To compare the experimental data, we have also computed the theoretical CPs using density functional theory (DFT) and hybridization of DFT and Hartree-Fock (HF) within linear combination of the atomic orbitals (LCAO) method. In addition, we have reported energy bands and density of states of TaB2 using LCAO and full potential-linearized augmented plane wave (FP-LAPW) methods. A real space analysis of CP of TaB2 confirms its metallic character which is in tune with the cross-overs of Fermi level by energy bands and Fermi surface topology. A comparison of equal-valence-electron-density (EVED) experimental profiles of isoelectronic TaB2 and NbB2 show more covalent (or less ionic) character of TaB2 than that of NbB2 which is in agreement with available ionicity data.<br /> (Copyright © 2013 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1872-9800
- Volume :
- 77
- Database :
- MEDLINE
- Journal :
- Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
- Publication Type :
- Academic Journal
- Accession number :
- 23518037
- Full Text :
- https://doi.org/10.1016/j.apradiso.2013.02.020