Time-resolved structural studies of the low-index faces of lead

Journal Article · Tue Feb 15 04:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.4886· OSTI ID:5260378

Herman, J W; Elsayed-Ali, H E ^[1]

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1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

Reflection high-energy electron diffraction with 200-ps time resolution is used to study the structural behavior of the three low-index faces of Pb. The surfaces are subjected to heating and cooling rates on the order of 10[sup 11] K/s. The open Pb(110) surface is seen to reversibly disorder below the bulk melting temperature, [ital T][sub [ital m]]. In contrast to Pb(110), the close-packed Pb(111) surface sustains superheating to [ital T][sub [ital m]]+120 K. Pb(100), a surface with atomic packing intermediate to that of Pb(110) and Pb(111), shows evidence of residual order at a temperature above the bulk melting point.

• DOE Contract Number: FG02-88ER45376
• OSTI ID: 5260378
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 49:7; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
CRYSTAL STRUCTURE
ELEMENTS
EPITAXY
LEAD
MELTING
METALS
ORDER-DISORDER TRANSFORMATIONS
PHASE TRANSFORMATIONS
RESOLUTION
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TIME RESOLUTION
TIMING PROPERTIES