Model predictions for the enthalpy of formation of transition metal alloys II

Reduction-induced Fermi level pinning at the interfaces between Pb(Zr,Ti)O3 and Pt, Cu and Ag metal electrodes

“…Enthalpies of solution of Pb in Pt, Cu and Ag have been calculated as -16, +23 and +9 kJ/mol, respectively [33]. Intermetallic Pt-Pb phases like Pt 5−7 Pb [34,35] and Pt 3−4 Pb [36] are also believed to serve as nucleation seeds for PZT(111) orientation during growth of PZT on Pt.…”

Study of preferential sputtering and segregation effects on the surface composition of AlPdMn quasi‐crystals

“…Thermodynamically, Mn is expected to mix into both Pd and Al. [13] www.interscience.wiley.com/journal/sia The composition of the Al-Pd-Mn surface was then studied by sputtering the hot surface with 2 keV He + and 2 keV Ne + . Both clean-annealed and equilibrium-sputtered surfaces were used as starting points.…”

Surface composition of Pt-Rh alloys; The role of lattice vibrational entropy

“…Generally, this contribution can be neglected in moderately exothermic alloy systems. According to predictions of Niessen et al [22] the formation of Pt-Rh alloys should be accompanied by mild exothermic heat effects. Hence, our conclusion is that no important effect due to this entropy cont~bution can be expected.…”

“…The cohesive energy, U, can be related to the following parameters [l-7]: (i) the enthalpy of sublimation of both components (or the surface free energy), [22] suggest that the formation of Pt-Rh alloys will be accompanied by only minor heat effects. Consequently.…”