Journal
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
Volume 1, Issue 3, Pages 89-91Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.200600116
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The full-potential linearized augmented plane wave method with the generalized gradient approximation for the exchange and correlation potential (LAPW-GGA) is used to understand the electronic and elastic properties of the first thorium-containing nitride perovskite TaThN3. Total and partial density of states, charge distributions as well as the elastic constants, bulk modulus, compressibility, shear modulus, Young modulus and Poisson ratio are obtained for the first time and analyzed in comparison with cubic ThN. The chemical bonding in TaThN3 is a combination of ionic Th-N and of mixed covalent-ionic Ta-N bonds. The cubic TaThN3 is semiconducting with the direct gap at about 0.65 eV. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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