X-ray surface diffraction analysis of structural transformations on the (0 0 1) surface of oxidized SrTiO3

A. Kazimirov; D. M. Goodner; M. J. Bedzyk; J. Bai; C. R. Hubbard

doi:10.1016/S0039-6028(01)01442-X

X-ray surface diffraction analysis of structural transformations on the (0 0 1) surface of oxidized SrTiO₃

A. Kazimirov^*, D. M. Goodner, M. J. Bedzyk, J. Bai, C. R. Hubbard

^*Corresponding author for this work

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

20 Scopus citations

Abstract

Surface X-ray scattering was used to study structural modifications on the (0 0 1) surface of oxidized SrTiO₃. Grazing incidence in-plane X-ray diffraction revealed a sequence of quasi-powder diffraction peaks originating from crystallites with nearly random in-plane orientation. This diffraction pattern is associated with micro-crystallites of irregular shape observed by atomic force microscopy on the surface after annealing in oxygen. Analysis based on available powder diffraction data identified these crystallites as monoclinic TiO. Different oxygen annealing treatments led to dramatic changes in the specular (0 0 L) crystal truncation rods indicating significant structural modifications in the underlying single crystal SrTiO₃ surface layer.

Original language	English (US)
Pages (from-to)	L711-L716
Journal	Surface Science
Volume	492
Issue number	1-2
DOIs	https://doi.org/10.1016/S0039-6028(01)01442-X
State	Published - Oct 10 2001
Externally published	Yes

Funding

This work was supported by the NSF under contract nos. DMR-9973436 and DMR-0076097 to NU and by the DOE under contract nos. W-31-109-ENG-38 to ANL and DE-AC02-98CH10886 to NSLS. The High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, is supported by the DOE under contract DE-AC05-00OR22725.

Keywords

Alkaline earth metals
Atomic force microscopy
Surface segregation
Surface structure, morphology, roughness, and topography
X-ray scattering, diffraction, and reflection

ASJC Scopus subject areas

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

Access to Document

10.1016/S0039-6028(01)01442-X

Cite this

@article{e89e737e11114bc1ba41773734864127,

title = "X-ray surface diffraction analysis of structural transformations on the (0 0 1) surface of oxidized SrTiO3",

abstract = "Surface X-ray scattering was used to study structural modifications on the (0 0 1) surface of oxidized SrTiO3. Grazing incidence in-plane X-ray diffraction revealed a sequence of quasi-powder diffraction peaks originating from crystallites with nearly random in-plane orientation. This diffraction pattern is associated with micro-crystallites of irregular shape observed by atomic force microscopy on the surface after annealing in oxygen. Analysis based on available powder diffraction data identified these crystallites as monoclinic TiO. Different oxygen annealing treatments led to dramatic changes in the specular (0 0 L) crystal truncation rods indicating significant structural modifications in the underlying single crystal SrTiO3 surface layer.",

keywords = "Alkaline earth metals, Atomic force microscopy, Surface segregation, Surface structure, morphology, roughness, and topography, X-ray scattering, diffraction, and reflection",

author = "A. Kazimirov and Goodner, {D. M.} and Bedzyk, {M. J.} and J. Bai and Hubbard, {C. R.}",

note = "Funding Information: This work was supported by the NSF under contract nos. DMR-9973436 and DMR-0076097 to NU and by the DOE under contract nos. W-31-109-ENG-38 to ANL and DE-AC02-98CH10886 to NSLS. The High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, is supported by the DOE under contract DE-AC05-00OR22725.",

year = "2001",

month = oct,

day = "10",

doi = "10.1016/S0039-6028(01)01442-X",

language = "English (US)",

volume = "492",

pages = "L711--L716",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

number = "1-2",

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T1 - X-ray surface diffraction analysis of structural transformations on the (0 0 1) surface of oxidized SrTiO3

AU - Kazimirov, A.

AU - Goodner, D. M.

AU - Bedzyk, M. J.

AU - Bai, J.

AU - Hubbard, C. R.

N1 - Funding Information: This work was supported by the NSF under contract nos. DMR-9973436 and DMR-0076097 to NU and by the DOE under contract nos. W-31-109-ENG-38 to ANL and DE-AC02-98CH10886 to NSLS. The High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, is supported by the DOE under contract DE-AC05-00OR22725.

PY - 2001/10/10

Y1 - 2001/10/10

N2 - Surface X-ray scattering was used to study structural modifications on the (0 0 1) surface of oxidized SrTiO3. Grazing incidence in-plane X-ray diffraction revealed a sequence of quasi-powder diffraction peaks originating from crystallites with nearly random in-plane orientation. This diffraction pattern is associated with micro-crystallites of irregular shape observed by atomic force microscopy on the surface after annealing in oxygen. Analysis based on available powder diffraction data identified these crystallites as monoclinic TiO. Different oxygen annealing treatments led to dramatic changes in the specular (0 0 L) crystal truncation rods indicating significant structural modifications in the underlying single crystal SrTiO3 surface layer.

AB - Surface X-ray scattering was used to study structural modifications on the (0 0 1) surface of oxidized SrTiO3. Grazing incidence in-plane X-ray diffraction revealed a sequence of quasi-powder diffraction peaks originating from crystallites with nearly random in-plane orientation. This diffraction pattern is associated with micro-crystallites of irregular shape observed by atomic force microscopy on the surface after annealing in oxygen. Analysis based on available powder diffraction data identified these crystallites as monoclinic TiO. Different oxygen annealing treatments led to dramatic changes in the specular (0 0 L) crystal truncation rods indicating significant structural modifications in the underlying single crystal SrTiO3 surface layer.

KW - Alkaline earth metals

KW - Atomic force microscopy

KW - Surface segregation

KW - Surface structure, morphology, roughness, and topography

KW - X-ray scattering, diffraction, and reflection

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