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Unit cell schematics of (a) the zinc-blende structure and (b) the fluorite structure. The large and small spheres denote Pt and N atoms, respectively. The Pt atoms form a face-centered-cubic (fcc) lattice, which has eight tetrahedral interstitial sites.
Total energies of platinum nitrides as a function of the tetragonal distortion: (a) zinc-blende phase; (b) fluorite phase. The zinc-blende phase is not stable against the tetragonal distortion.
Calculated total density of states (DOS) of . The Fermi level is at 0.
Lattice constants ( in Å) and bulk moduli ( in GPa) of platinum nitrides and platinum.
Single-crystal elastic constants , shear modulus , Young’s modulus , and Poisson’s ratio of . All elastic constants are in GPa, except the dimensionless Poisson’s ratio.
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