HCP Arrangements Give Identical Structures

Synthesis of nickel nanoparticles with fcc and hcp crystal structures

Nickel nanoparticles have been synthesized using nickel nitrate, vegetable oil and sucrose. Ethanol has been used as a solvent since the heat of reaction shows the destabilization of nickel particles if water is present in the synthesis mixture. Nickel with fcc phase is obtained by reduction with sucrose followed by stabilization using vegetable oil. Nickel or possibly nickel carbide with hcp s...

Singularity Conditions of 3T1R Parallel Manipulators with Identical Limb Structures

Thermodynamic properties of binary HCP solution phases from special quasirandom structures

Three different special quasirandom structures (SQS) of the substitutional hcp A1−xBx binary random solutions (x = 0.25, 0.5, and 0.75) are presented. These structures are able to mimic the most important pair and multi-site correlation functions corresponding to perfectly random hcp solutions at those compositions. Due to the relatively small size of the generated structures, they can be used ...

Designing SAT for HCP

For arbitrary undirected graph G, we are designing SATISFIABILITY problem (SAT) for HCP, using tools of Boolean algebra only. The obtained SAT be the logic formulation of conditions for Hamiltonian cycle existence, and use m Boolean variables, where m is the number of graph edges. This Boolean expression is true if and only if an initial graph is Hamiltonian. That is, each satisfying assignment...

Generating derivative structures from multilattices: Algorithm and application to hcp alloys

We present an algorithm for generating all derivative superstructures of a nonprimitive parent lattice. The algorithm has immediate application in important materials design problems such as modeling hexagonalclose-packed hcp alloys. Extending the work of Hart and Forcade Phys. Rev. B 77, 224115 2008 which applies only to Bravais lattices , this approach applies to arbitrary multilattices. The ...