Compton Profiles and Nature of Bonding in Tantalum Chalcogenides

Abstract:

Abstract. We report the Compton profiles of tantalum chalcogenides (TaS2 and TaSSe) using Hartree–Fock and hybridization of Hartree–Fock and density functional theories within linear combination of atomic (Gaussian) orbitals. To interpret the theoretical data on Compton line shapes, we have measured the Compton profiles using our in-house 100 mCi 241Am γ-ray Compton spectrometer. To understand the relative nature of bonding, we have obtained the equal-valence-electron-density (EVED) profiles. The EVED profiles shows that charge in TaSSe is more localized than TaS2 in the bonding direction which confirms that TaSSe is more covalent than TaS2, which is in agreement with the Mulliken’s population analysis.

• Periodical: Solid State Phenomena (Volume 209)
• Pages: 143-146
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.209.143
• Online since: November 2013
• Authors: K.C. Bhamu, Arvind Sharma, Asvin R. Jani, B.L. Ahuja
• Keywords: Compton Scattering, Electronic Structure Calculations

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