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A-site cation-vacancy ordering in Sr1-3x/2LaxTiO3: A study by HRTEM

Abstract:

The system Sr(1-3x/2)La(x)TiO3 (0.25 ≤ x ≤ 0.6) has been studied by high-resolution transmission electron microscopy, allowing the direct observation of vacant sites on the Sr/La sublattice of the perovskite structure. Isolated vacancies are observed in 2D structural projections of samples having x ~ 0.3. Vacancy pairing occurs with increasing La concentration, followed by the formation of vacancy squares of side 2a0 and vacancy rectangles 2a0xa0. The latter signify vacancy ordering in an ort...

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Publication status:
Published

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Publisher copy:
10.1006/jssc.1999.8546

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
Bennett, JE More by this author
Tilley, RJD More by this author
Journal:
JOURNAL OF SOLID STATE CHEMISTRY
Volume:
149
Issue:
2
Pages:
360-369
Publication date:
2000-02-01
DOI:
ISSN:
0022-4596
URN:
uuid:4bac1354-a1f2-449b-a180-3082f62458a8
Source identifiers:
37364
Local pid:
pubs:37364
Language:
English

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