Photoemission microscopy study of the temperature evolution of a Pd film deposited on a polycrystalline Ni substrate

TY - JOUR

T1 - Photoemission microscopy study of the temperature evolution of a Pd film deposited on a polycrystalline Ni substrate

AU - Kiskinova, M

AU - Morrison, G R

AU - Barinov, A

AU - Gregoratti, L

AU - Barinov, A

PY - 2005/11/15

Y1 - 2005/11/15

N2 - We have previously reported a study on the nature of a submonolayer deposit of Pd on polycrystalline Ni. It was shown, using photoemission microscopy, that at 300 K the amount of Pd depended upon the crystal structure of a particular surface grain. Pd was shown to be present on the surface as adsorbed Pd and as a Pd/Ni alloy. Here we report an extension of our original experiments to measurements at different temperatures. It is shown that at 620 and 700 K, stable but different distributions are obtained. It is also observed that the proportion of alloyed to adsorbed Pd depends not only upon the grain structure but also upon the anneal conditions.

AB - We have previously reported a study on the nature of a submonolayer deposit of Pd on polycrystalline Ni. It was shown, using photoemission microscopy, that at 300 K the amount of Pd depended upon the crystal structure of a particular surface grain. Pd was shown to be present on the surface as adsorbed Pd and as a Pd/Ni alloy. Here we report an extension of our original experiments to measurements at different temperatures. It is shown that at 620 and 700 K, stable but different distributions are obtained. It is also observed that the proportion of alloyed to adsorbed Pd depends not only upon the grain structure but also upon the anneal conditions.

U2 - 10.1103/PhysRevB.72.193403

DO - 10.1103/PhysRevB.72.193403

M3 - Article

SN - 1550-235X

SN - 2469-9969

VL - 72

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

IS - 19

M1 - 193403

ER -