Reflection high-energy electron-diffraction study of melting and solidification of Pb on graphite

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.4141· OSTI ID:664451

Zhang, Z H ^[1]; Kulatunga, P ^[2]; Elsayed-Ali, H E ^[1]

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1. Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529 (United States)
2. Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)

The melting and solidification of Pb thin films on pyrolytic graphite are investigated {ital in situ} by reflection high-energy electron diffraction. Thin films with thicknesses of 4{endash}150 monolayers are investigated. The surface morphology of the thin films were studied by scanning electron microscopy. Superheating of the Pb thin films by 4{plus_minus}2 to 12{plus_minus}2 K is observed from diffraction intensity measurements. Upon cooling the substrate, the Pb on graphite is seen to supercool by {approximately}69{plus_minus}4 K. {copyright} {ital 1997} {ital The American Physical Society}

• DOE Contract Number: FG02-97ER45625; FG03-93ER45504
• OSTI ID: 664451
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 7 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRON DIFFRACTION
GRAPHITE
HEAT TRANSFER
INTERFACES
LEAD
MELTING
PHASE TRANSFORMATIONS
PYROLYTIC CARBON
SCANNING ELECTRON MICROSCOPY
SOLIDIFICATION
THIN FILMS