Thermal expansion of the Ag(111) surface measured by x-ray scattering

Journal Article · Wed Mar 14 23:00:00 EST 2001 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.63.113404· OSTI ID:40205429

Botez, C E; Elliott, W C; Miceli, P F; Stephens, P W

We have investigated the structure of the Ag(111) surface, for temperatures between 300 and 1100 K (90% of the bulk melting point), using synchrotron x-ray diffraction. Our data show no evidence of the anomalously large surface thermal expansion previously reported by medium-energy ion-scattering [Phys. Rev. Lett. 72, 3574 (1994)]. At all temperatures we find that the interlayer separations at the surface differ from their bulk counterparts by less than 1%, indicating that the surface expands similarly to the underlying bulk crystal. This behavior is in good agreement with results from molecular dynamics simulations.

• Sponsoring Organization: (US)
• OSTI ID: 40205429
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 11 Vol. 63; ISSN 0163-1829
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MELTING
SCATTERING
SYNCHROTRONS
THERMAL EXPANSION
X-RAY DIFFRACTION