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Title: Oxygen-induced nano-faceting of Re( 11 2 ¯ 1 )

Abstract

We report results from a detailed study of oxygen-induced faceting of Re(112¯1) using low energy electron diffraction (LEED). Depending on conditions for reaction with oxygen, the initially planar Re(112¯1) surface evolves sequentially to form zigzag chains consisting of (011¯0) and (101¯0) facets that coexist with stepped (112¯1) plateaus; three-sided pyramids exposing (011¯0), (101¯0) and (336¯4) facets; a faceted surface with five facets including (011¯0), (101¯0), (112¯2)-(2 × 1), (011¯1)-(2 × 1) and (101¯1)-(2 × 1); and four-sided pyramids exposing {011¯0} and {011¯1}-(2 × 1) facets. We have observed reversible morphological transitions between the faceted surfaces and discovered that each intermediate facet in the evolutionary chain contains microscopic structural elements of the preceding and following facets, which may provide a natural explanation for the microscopic mass transport pathways in the morphological evolution. Lastly, scanning tunneling microscopy (STM) data confirm the morphology of faceted surfaces and give complementary information to LEED results.

Authors:
ORCiD logo [1];  [1];  [1]
  1. Rutgers, The State Univ. of New Jersey, Piscataway, NJ (United States)
Publication Date:
Research Org.:
Rutgers Univ., Piscataway, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1349419
Alternate Identifier(s):
OSTI ID: 1244734
Grant/Contract Number:  
FG02-93ER14331
Resource Type:
Accepted Manuscript
Journal Name:
Surface Science
Additional Journal Information:
Journal Volume: 635; Journal Issue: C; Journal ID: ISSN 0039-6028
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Rhenium; faceting; mass transport; oxygen; morphology

Citation Formats

Wang, Hao, Chen, Wenhua, and Bartynski, Robert A. Oxygen-induced nano-faceting of Re(112¯1). United States: N. p., 2015. Web. doi:10.1016/j.susc.2014.12.015.
Wang, Hao, Chen, Wenhua, & Bartynski, Robert A. Oxygen-induced nano-faceting of Re(112¯1). United States. https://doi.org/10.1016/j.susc.2014.12.015
Wang, Hao, Chen, Wenhua, and Bartynski, Robert A. Thu . "Oxygen-induced nano-faceting of Re(112¯1)". United States. https://doi.org/10.1016/j.susc.2014.12.015. https://www.osti.gov/servlets/purl/1349419.
@article{osti_1349419,
title = {Oxygen-induced nano-faceting of Re(112¯1)},
author = {Wang, Hao and Chen, Wenhua and Bartynski, Robert A.},
abstractNote = {We report results from a detailed study of oxygen-induced faceting of Re(112¯1) using low energy electron diffraction (LEED). Depending on conditions for reaction with oxygen, the initially planar Re(112¯1) surface evolves sequentially to form zigzag chains consisting of (011¯0) and (101¯0) facets that coexist with stepped (112¯1) plateaus; three-sided pyramids exposing (011¯0), (101¯0) and (336¯4) facets; a faceted surface with five facets including (011¯0), (101¯0), (112¯2)-(2 × 1), (011¯1)-(2 × 1) and (101¯1)-(2 × 1); and four-sided pyramids exposing {011¯0} and {011¯1}-(2 × 1) facets. We have observed reversible morphological transitions between the faceted surfaces and discovered that each intermediate facet in the evolutionary chain contains microscopic structural elements of the preceding and following facets, which may provide a natural explanation for the microscopic mass transport pathways in the morphological evolution. Lastly, scanning tunneling microscopy (STM) data confirm the morphology of faceted surfaces and give complementary information to LEED results.},
doi = {10.1016/j.susc.2014.12.015},
journal = {Surface Science},
number = C,
volume = 635,
place = {United States},
year = {Thu Jan 08 00:00:00 EST 2015},
month = {Thu Jan 08 00:00:00 EST 2015}
}

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Cited by: 2 works
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