Time, temperature, and oxygen partial pressure-dependent surface reconstructions on SrTiO3(1 1 1): A systematic study of oxygen-rich conditions

Ann N. Chiaramonti; Courtney H. Lanier; Laurence D. Marks; Peter C. Stair

doi:10.1016/j.susc.2008.07.033

Time, temperature, and oxygen partial pressure-dependent surface reconstructions on SrTiO₃(1 1 1): A systematic study of oxygen-rich conditions

Ann N. Chiaramonti^*, Courtney H. Lanier, Laurence D. Marks, Peter C. Stair

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The formation of surface reconstructions on the (1 1 1) surface of SrTiO₃ following Ar⁺ ion bombardment and annealing in oxygen-rich (0.2 ≤ pO₂ ≤ 1.0) environments is systematically investigated using transmission electron microscopy imaging and diffraction. A series of air stable and highly reproducible reconstructions are observed whose periodicity depends on the combination of annealing time, temperature, and oxygen partial pressure. Approximate phase maps can be constructed for each annealing time investigated, and these reveal that for short annealing times (0.5 h) the periodicity of the observed reconstruction is a primarily function of the partial pressure of oxygen in the annealing environment while for long annealing times (10 h) the observed periodicity is primarily a function of the annealing temperature. For intermediate annealing times (5 h), three coexisting reconstructions are observed to exist on a single specimen.

Original language	English (US)
Pages (from-to)	3018-3025
Number of pages	8
Journal	Surface Science
Volume	602
Issue number	18
DOIs	https://doi.org/10.1016/j.susc.2008.07.033
State	Published - Sep 15 2008

Keywords

Morphology
Oxides
Roughness and topography
Single crystal surfaces
Surface reconstruction
Surface structure
Transmission electron microscopy
Transmission high energy electron diffraction

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.susc.2008.07.033

Cite this

@article{d32ed0adc7984c12b9f62044dfc63441,

title = "Time, temperature, and oxygen partial pressure-dependent surface reconstructions on SrTiO3(1 1 1): A systematic study of oxygen-rich conditions",

abstract = "The formation of surface reconstructions on the (1 1 1) surface of SrTiO3 following Ar+ ion bombardment and annealing in oxygen-rich (0.2 ≤ pO2 ≤ 1.0) environments is systematically investigated using transmission electron microscopy imaging and diffraction. A series of air stable and highly reproducible reconstructions are observed whose periodicity depends on the combination of annealing time, temperature, and oxygen partial pressure. Approximate phase maps can be constructed for each annealing time investigated, and these reveal that for short annealing times (0.5 h) the periodicity of the observed reconstruction is a primarily function of the partial pressure of oxygen in the annealing environment while for long annealing times (10 h) the observed periodicity is primarily a function of the annealing temperature. For intermediate annealing times (5 h), three coexisting reconstructions are observed to exist on a single specimen.",

keywords = "Morphology, Oxides, Roughness and topography, Single crystal surfaces, Surface reconstruction, Surface structure, Transmission electron microscopy, Transmission high energy electron diffraction",

author = "Chiaramonti, {Ann N.} and Lanier, {Courtney H.} and Marks, {Laurence D.} and Stair, {Peter C.}",

note = "Funding Information: This work was supported by the EMSI program of the National Science Foundation and the US Department of Energy Office of Science (CHE-9810378) as well as the Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, Office of Science, US Department of Energy (DE-FG02-03ER15457) at the Northwestern University Institute for Environmental Catalysis. Argonne National Laboratory, a US Department of Energy Office of Science Laboratory, is operated under Contract No. DE-AC02-06CH11357. ",

year = "2008",

month = sep,

day = "15",

doi = "10.1016/j.susc.2008.07.033",

language = "English (US)",

volume = "602",

pages = "3018--3025",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

number = "18",

}

TY - JOUR

T1 - Time, temperature, and oxygen partial pressure-dependent surface reconstructions on SrTiO3(1 1 1)

T2 - A systematic study of oxygen-rich conditions

AU - Chiaramonti, Ann N.

AU - Lanier, Courtney H.

AU - Marks, Laurence D.

AU - Stair, Peter C.

N1 - Funding Information: This work was supported by the EMSI program of the National Science Foundation and the US Department of Energy Office of Science (CHE-9810378) as well as the Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, Office of Science, US Department of Energy (DE-FG02-03ER15457) at the Northwestern University Institute for Environmental Catalysis. Argonne National Laboratory, a US Department of Energy Office of Science Laboratory, is operated under Contract No. DE-AC02-06CH11357.

PY - 2008/9/15

Y1 - 2008/9/15

N2 - The formation of surface reconstructions on the (1 1 1) surface of SrTiO3 following Ar+ ion bombardment and annealing in oxygen-rich (0.2 ≤ pO2 ≤ 1.0) environments is systematically investigated using transmission electron microscopy imaging and diffraction. A series of air stable and highly reproducible reconstructions are observed whose periodicity depends on the combination of annealing time, temperature, and oxygen partial pressure. Approximate phase maps can be constructed for each annealing time investigated, and these reveal that for short annealing times (0.5 h) the periodicity of the observed reconstruction is a primarily function of the partial pressure of oxygen in the annealing environment while for long annealing times (10 h) the observed periodicity is primarily a function of the annealing temperature. For intermediate annealing times (5 h), three coexisting reconstructions are observed to exist on a single specimen.

AB - The formation of surface reconstructions on the (1 1 1) surface of SrTiO3 following Ar+ ion bombardment and annealing in oxygen-rich (0.2 ≤ pO2 ≤ 1.0) environments is systematically investigated using transmission electron microscopy imaging and diffraction. A series of air stable and highly reproducible reconstructions are observed whose periodicity depends on the combination of annealing time, temperature, and oxygen partial pressure. Approximate phase maps can be constructed for each annealing time investigated, and these reveal that for short annealing times (0.5 h) the periodicity of the observed reconstruction is a primarily function of the partial pressure of oxygen in the annealing environment while for long annealing times (10 h) the observed periodicity is primarily a function of the annealing temperature. For intermediate annealing times (5 h), three coexisting reconstructions are observed to exist on a single specimen.

KW - Morphology

KW - Oxides

KW - Roughness and topography

KW - Single crystal surfaces

KW - Surface reconstruction

KW - Surface structure

KW - Transmission electron microscopy

KW - Transmission high energy electron diffraction

UR - http://www.scopus.com/inward/record.url?scp=52049106352&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=52049106352&partnerID=8YFLogxK

U2 - 10.1016/j.susc.2008.07.033

DO - 10.1016/j.susc.2008.07.033

M3 - Article

AN - SCOPUS:52049106352

SN - 0039-6028

VL - 602

SP - 3018

EP - 3025

JO - Surface Science

JF - Surface Science

IS - 18

ER -