Octahedral Coordination Compounds of the Ni, Pd, Pt Triad

Relativity and Magnetism in Ni-Pd and Ni-Pt Alloys

We show that the differences in the magnetic properties of Ni-Pd and Ni-Pt alloys arise mainly due to relativity. In particular, we find that the local magnetic moment of Ni increases with the addition of Pd in Ni-Pd while it decreases with the addition of Pt in Ni-Pt, as found experimentally, only if relativity is present. Our analysis is based on the effects of relativity on (i) the spin-pola...

Effective-medium calculations for hydrogen in Ni, Pd, and Pt.

Synthesis of octahedral Pt-Pd alloy nanoparticles for improved catalytic activity and stability in methanol electrooxidation.

We report Pt-Pd nanoparticles synthesized by means of a polyol process with glycerol as a reducing agent. The Pt-Pd nanoparticles exhibit dominantly exposed {111} facets in octahedral shape with complete alloy formation between Pt and Pd. Furthermore, the octahedral Pt-Pd alloy catalysts show improved catalytic activity and stability in methanol electrooxidation.

Intermetallic Compounds RET Mg 2 ( RE = La , Pr , Nd ; T = Ni , Pd , Pt ) with MgCuAl 2 - type Structure

The magnesium-rich intermetallic compounds RETMg2 (RE = La, Pr, Nd; T = Ni, Pd, Pt) were obtained by melting of the elements in sealed tantalum ampoules and subsequent annealing. Their structures have been characterized on the basis of powder X-ray diffraction. The RETMg2 phases crystallize with the orthorhombic MgCuAl2-type structure, space group Cmcm. The crystal chemical peculiarities are br...

A comparing study on the evolution of Pd/Ni (10 0) and Pt/Ni(10 0) heteroepitaxial systems

Molecular dynamics simulations are performed to study the strain relief and the evolution of Pd/ Ni(10 0) and Pt/Ni(10 0) heteroepitaxial systems by using embedded atom method. The atomistic mechanism for the formation of misfit dislocation in Pd/Ni(10 0) and Pt/Ni(10 0) epitaxial islands is analyzed by comparing the evolution behaviors of the two systems. The simulation results reveal that the...